Missing Game Thumbnails for Mini Profiles (Mainly for Steam Friends List)

[invisxp]

I've used SAM to get a few lost and retrospectively unobtainable achievements (for PAYDAY 2 to be exact) since I had a cloud sync issue, and since I used SAM, my Game Thumbnails for Mini Profiles are missing. If I hover the cursor on my Profile Picture, for me, every game's game thumbnail is blank, while for my friends, some have blank and some are working perfectly.
I've contacted Steam Support already, but they couldn't help me with this issue sadly (they refreshed my account and instructed me to change Steam to Beta Participation, Browser Cache refresh etc... and finally, they said that it can only be solved via a future update, but now they can't do anything for this problem yet), so I'm trying to get help here, since I researched a bit, and discovered that another person who've used SAM in the past has the same issue as me. (Screenshot that I added applies to half of my friendlist + me specifically and it's a permanent problem since I've used SAM)

I would be really grateful for any help!