Why can't I tell which update introduced a bug?

Because your bug reports and crashes aren't tagged with the build version, so all reports blur together with no way to see which version a problem first appeared in. Without a version axis, a bug could have been there forever or appeared yesterday, and you can't tell, so you can't connect it to an update. It's a tooling gap, not an inherent difficulty.

How do I find which version a bug first appeared in?

Tag every report and crash with its build version, then read each issue's occurrence history for the earliest version it shows up in. A crash whose occurrences all start at 1.4 with nothing in 1.3 is a 1.4-introduced bug. A crash reporter that attaches the build version to every report automatically shows which versions each issue has occurred in, so the first-seen version (the onset) is right there.

How does knowing the version help me fix a regression?

It bounds the cause to what that one update changed, turning an open-ended hunt into a focused one (essentially a bisect). Once you know a bug first appeared in version 1.4, you cross-reference that onset with what 1.4 changed (your commits, patch notes), and the bug lives in that intersection, usually small enough to review directly. The version onset turns 'why is this broken?' into 'what did we change in 1.4?'

Why Can't I Tell Which Update Broke My Game?

Quick answer: You can't tell which update broke your game because your bug reports and crashes aren't tagged with the build version, so all reports blur together with no way to see which version a problem first appeared in. With version tagging, the build a bug first shows up in is obvious, and that bounds the cause to what that update changed, turning a guessing game into a focused investigation.

Knowing which update introduced a problem is one of the most powerful debugging facts, it bounds the cause to what that one update changed. If you can't tell which update broke something, the usual reason is that your reports aren't version-tagged, so you have no way to see when a problem started.

Why You Can't Tell

To know which update introduced a bug, you need to know which version each report and crash came from, and then see the earliest version a problem appears in. Without version tagging, all your reports are timeless: a bug could have been there forever or appeared yesterday, and you can't tell, so you can't connect it to an update. The reports blur together with no version axis, making it impossible to see that a crash started with version 1.4.

This is a tooling gap, not an inherent difficulty. The information you need (which version a problem first appeared in) is simple, but it requires every report and crash to carry its build version, which untagged reporting doesn't provide.

How to Fix It

Tag every report and crash with its build version, then the first-seen version is right there in each issue's history. Bugnet attaches the build version to every report and crash automatically, so each issue shows which versions it has occurred in, and the earliest is your onset. A crash whose occurrences all start at 1.4, with nothing in 1.3, is a 1.4-introduced bug, the data tells you directly instead of leaving you to guess.

Once you have the first-seen version, the cause is bounded to what that update changed, cross-reference the version onset with your commits/patch notes for that release, and the bug lives in that intersection (usually small enough to review directly). This is essentially a bisect: the version onset turns 'why is this broken?' into 'what did we change in 1.4?' See our guide on tracking which update introduced a bug.

You can't tell which update broke your game because reports aren't version-tagged. Tag every report and crash with its build version, then the first-seen version bounds the cause to that update's changes.