Bug: Hammer crash when using Quick Hide

[darvil82]

Describe the bug

When trying to quick hide everything except the selected objects, hammer crashes if these objects were selected through the VisGroup Mark button. A video is available showing this behavior.

Hammer may inconsistently show errors like these:

It's important to note that, before crashing, not all objects are hidden. This is a weird behavior because all the rest of objects should be hidden when using QuickHide. Trying to repeat this action will instantly cause a crash.

To Reproduce

1. Open a map in hammer.
2. Select some objects in a VisGroup by using the Mark button at the bottom of the VisGroup panel.
3. Press reverse QuickHide (Ctrl + H).
4. Errors may appear or a crash may occur inmediately.

Issue Map

Private VMF. Can be provided on request (DarviL#3242 on discord).

Expected Behavior

Hammer should not crash when using quick hide at this point. Everything should be hidden except the selected objects.

Operating System

Windows 10 19044

[darvil82]

Can confirm this is still an issue.

[ozxybox]

I am unable to reproduce this on the latest staging. Is this still a problem?

[ozxybox]

Ahh, it's inconsistent crash? Will need to test it again more later then.

[darvil82]

Will test tomorrow again 👍

[darvil82]

I can't seem to get the issue anymore. Closing.