Is there an existing issue for this problem?

• I have searched the existing issues

OrcaSlicer Version

2.3.0-beta build dc49116

Operating System (OS)

Windows

OS Version

WIndows 11

Additional system information

No response

Printer

Voron V2.4

How to reproduce

Open several different mul;ti-colour projects.

Actual results

Sometimes, when I open an existing multi-colour project, some of the filaments have no name, and the drop-down selection control is absent, like so:

As shown in the image, I get filament presets that have colours but no selection box, so they can't be changed.

Note: I can click the Edit button and the editor opens. I can then change the filament selection at the top of the edit box. However, on closing the edit box, the filament name is still blank and there is still no slection box.

If I quit from the program and then re-open it and load the same project, the filaments and their selection boxes will be restored.

The problem seems to occur after opening several different projects without closing the program.

Expected results

Filament entries should always have a selection box.

Project file & Debug log uploads

Multi-filament-dropdown-bug.zip
Note: the issues doesn't seem to be related to the project file per se, because when I subsequently opened this project, the issue was no longer present. It seems to be a run-time effect that occurs after openming several different projects with different filament configurations.

Checklist of files to include

• Log file
• Project file

Anything else?

No response