Use console commands to give yourself any weapons or armor that have disappeared, at least until a patch comes out.

Warning

Backup your save before trying this, I’m unsure if there are any long term side effects from doing this, as this is just a solution I found poking around in the game files after Claymore’s shotgun and armor vanished on my save and I couldn’t find any other solutions online.

Enabling the Console

1. Right-click game in steam and Manage -> Browse Local Files
2. Navigate to /XCOM-Chimera-Squad/Binaries/Win64
3. Copy xcom.exe
4. Go to desktop and right-click -> paste as shortcut
5. Right-click the shortcut -> Properties
6. Add -allowconsole to the end of the target box
7. Run the shortcut, it should start the game without the launcher
8. Load your game and make a seperate save, just to be safe
9. Press ~ in-game to open the console