How to Fix a Dropdown That Stays Open After Clicking Outside

Opening a custom combobox and then clicking elsewhere leaves it floating open over the rest of the UI. It has no outside-click dismissal. Here is how to fix it.

How to fix it

1. Listen for outside clicks

When the dropdown opens, attach a pointerdown listener on document that closes it if !dropdown.contains(event.target).

2. Detach the listener on close

Remove the document listener when the dropdown closes so you are not leaking handlers or intercepting unrelated clicks across the page.

3. Close other open dropdowns first

Before opening one dropdown, close any already-open ones so you never end up with two menus expanded at once stealing each other's clicks.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every HTML5 error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.