Common Bug Report Mistakes and How to Avoid Them

This guide covers common bug report mistakes and how to avoid them in detail. A bug report is only as useful as the information it contains. Across hundreds of game studios, the same mistakes appear in bug reports over and over: titles that could mean anything, reproduction steps that skip the critical details, severity levels assigned by gut feeling, and a conspicuous absence of visual evidence. Each of these mistakes adds minutes or hours to the time it takes a developer to understand, reproduce, and fix the issue. This article breaks down the most common mistakes and shows you exactly how to prevent them.

Mistake 1: Vague or Generic Titles

The title is the first thing every developer reads when scanning the bug backlog. A vague title forces them to open the full report just to understand what the bug is about. When a backlog contains hundreds of tickets, this friction adds up to significant lost time. Worse, vague titles make it impossible to search for duplicates, leading to the same bug being filed multiple times under different ambiguous names.

Common offenders include titles like “game crashed,” “UI bug,” “weird behavior in level 3,” or “player movement issue.” Each of these could describe dozens of different bugs. A developer scanning the backlog cannot tell whether their fix already addresses one of these tickets without opening and reading every single one.

The fix is a simple title format: [What is broken] [Where it happens]. This format produces titles like “Health bar does not update after taking poison damage in Arena mode,” “NPC dialogue skips second line when triggered from behind,” or “Crash to desktop when loading autosave from Dungeon 3.” Each of these titles tells the developer exactly what to expect before they open the report.

## Bug Title Examples: Bad vs Good

Bad:  "Crash"
Good: "Crash to desktop when equipping cursed item in inventory"

Bad:  "Sound issue"
Good: "Footstep audio continues playing after character dies in multiplayer"

Bad:  "Boss fight broken"
Good: "Forest Guardian boss stuck in idle animation after phase 2 transition"

Bad:  "Can't progress"
Good: "Quest 'The Lost Key' cannot be completed - key item not in chest after reload"

Bad:  "Graphics glitch"
Good: "Shadow flickering on terrain near water boundary in Swamp biome"

Add this format guide to your bug tracker’s submission form, ideally as placeholder text in the title field. When reporters see the expected format every time they file a bug, compliance increases dramatically without requiring enforcement or training sessions.

Mistake 2: Missing or Incomplete Reproduction Steps

Reproduction steps are the single most valuable part of a bug report. Without them, a developer must guess at how to trigger the issue, often spending more time reproducing the bug than fixing it. Incomplete steps are nearly as bad as missing ones — they create ambiguity that leads to back-and-forth questions between the reporter and the developer, adding days to the resolution time.

The most common failures in reproduction steps are: starting from an undefined state (“play the game and eventually the bug happens”), skipping intermediate steps that seem obvious to the reporter but are not obvious to the developer, mixing multiple bugs into a single report, and describing the bug rather than the actions that trigger it.

Good reproduction steps have three qualities. They start from a known state — a specific save file, a fresh game start, or a particular menu screen. They include every action the user takes, even ones that seem irrelevant, because the “irrelevant” action is often the trigger. And they clearly separate the expected result from the actual result, so the developer knows what correct behavior looks like.

Make reproduction steps a required field in your bug tracker. Pre-fill the field with a template that guides the reporter:

Starting State: [e.g., "New game, completed tutorial, at town hub"]

Steps:
  1. [First action]
  2. [Second action]
  3. [Action that triggers the bug]

Expected Result: [What should happen]
Actual Result:   [What actually happens]
Frequency:       [Always / Often / Sometimes / Once]

The frequency field is often overlooked but critically important. A bug that happens every time is almost always easier to fix than one that occurs intermittently, and knowing the frequency upfront helps developers decide how to investigate. A “sometimes” bug may require logging or instrumentation to catch, while an “always” bug can be reproduced and debugged immediately.

Mistake 3: Incorrect Severity Assignment

Severity inflation and severity deflation are both common problems, and both waste development time. When every bug is filed as “critical,” the severity system becomes meaningless and developers stop trusting it. When genuine blockers are filed as “major,” they sit in the backlog for days while the team works on less important issues. Either way, the wrong bugs get fixed in the wrong order.

The root cause is almost always ambiguous severity definitions. Generic definitions like “Critical: a serious problem” leave too much room for interpretation. One tester’s “serious” is another tester’s “moderate.” The solution is game-specific severity definitions with concrete examples that leave no room for debate.

Write your severity definitions as a decision tree rather than a description list. Instead of asking the reporter to judge how “serious” a bug is, ask specific questions: Does the game crash or lose data? That is P0. Does the bug prevent the player from progressing? That is P1. Does the bug significantly degrade the experience but have a workaround? That is P2. Is the bug cosmetic or minor? That is P3. This question-based approach removes subjective judgment and produces consistent results across reporters.

“We audited our bug tracker and found that 60 percent of bugs labeled P1-Critical were actually P2 or P3. Developers had learned to ignore the severity field entirely and made their own priority judgments. Once we rewrote our severity definitions with a decision tree and real examples, agreement between reporters and developers jumped from 40 percent to over 90 percent.”

Review severity assignments during your weekly triage meeting. When the triage lead disagrees with the reporter’s severity assessment, they should change it and leave a comment explaining why. Over time, these corrections train reporters to apply the definitions more accurately. Add the edge cases that generated disagreement to your severity definition document as examples, building a living reference that becomes more precise with each triage cycle.

Mistake 4: No Screenshots or Visual Evidence

A game is a visual medium. Describing a visual bug in text is like describing a painting over the phone — technically possible but enormously inefficient. Yet many bug reports arrive with no screenshots, no video, and no visual evidence of any kind. The developer must either reproduce the bug themselves to see it, or work from a description that may not match what the reporter actually observed.

The most common excuse for missing screenshots is “it was obvious.” It is never as obvious as the reporter thinks. A “texture glitch on the wall” could be z-fighting, a missing texture, a UV mapping error, an LOD pop-in, or a lighting artifact. Each has a different cause and a different fix. A screenshot narrows the possibilities immediately.

For gameplay bugs, a short screen recording is even more valuable than a screenshot. A ten-second clip showing the player performing the actions that trigger the bug provides more information than a paragraph of text. Most operating systems have built-in recording tools — Windows Game Bar, macOS Screenshot tool, and OBS on Linux — so there is no software barrier. Many game engines also support built-in replay capture that can be attached directly to bug reports.

Make visual evidence a required field in your bug tracker for all visual, UI, gameplay, and animation bugs. The only category where a screenshot may not be applicable is pure logic bugs (incorrect damage calculation, wrong quest state transition) or server-side issues. Even then, a screenshot of the debug overlay or console output showing the incorrect values is more useful than a text description. Studios that enforce mandatory screenshots consistently report a 30 to 40 percent reduction in follow-up questions on bug tickets.

Mistake 5: Reporting Symptoms Instead of Behaviors

This is the subtlest and most difficult mistake to correct. Many bug reports describe the reporter’s interpretation of the problem rather than the observable behavior. “The AI is broken” is an interpretation. “The enemy archer stands still and does not attack when the player is within 5 meters” is a behavior. “Performance is bad” is an interpretation. “Frame rate drops to 15 FPS when more than 10 enemies are on screen in the Courtyard level” is a behavior.

Interpretations are dangerous because they can lead the developer down the wrong path. A report saying “the AI is broken” might send a developer into the AI code when the actual problem is a missing collision shape that prevents the enemy from detecting the player. A report describing the specific behavior — the enemy does not react to the player at close range — gives the developer a clearer starting point for investigation.

Train reporters to describe what they see and hear, not what they think is wrong. A useful exercise is to have new testers write bug reports and then review them as a team, identifying any sentences that contain interpretations and rewriting them as observable behaviors. After two or three review sessions, most reporters internalize the distinction and naturally write behavior-focused reports.

Encourage reporters to separate their observations from their hypotheses. If a tester suspects they know the cause of a bug, that information is valuable — but it should go in a “Notes” field, clearly marked as a hypothesis, not in the description or title. This way, the developer benefits from the tester’s insight without being anchored to a potentially incorrect diagnosis.

Related Issues

For a complete guide to writing effective bug reports, see how to write good bug reports for game development. To get a ready-to-use template that prevents most of these mistakes, check out our bug report template for game QA testers. For a deeper look at the cost of these mistakes over time, read why proper bug reports save development time.

Pick the one mistake your team makes most often and fix it this sprint. A required screenshot field or a title format guide takes five minutes to implement and saves hours every week.