Your system information

• Steam client version (build number or date): Mar 7 2020
• Distribution (e.g. Ubuntu): Elementary OS Hera
• Opted into Steam client beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

When customizing the Steam Library for Sourcemods/HL1 mods (changing banners, logos, etc) after adding more or removing some the customization done to one mod will go to another mod or just disappear.

Steps for reproducing this issue:

1. Install mods
2. Add background image/logo/cover art
3. Either add more mods or remove some