@jstrawn Hello. I want to say something about the third point. I've just reinstalled my OS and installed Premiere and then noticed that custom graphics display very well and I can see their thumbnails. However the default ones doesn't.
@Kонстантин Thank you for that info. I have another idea for you to try:
Clear out the folder where the cached thumbnails are kept by deleting the ProBrowser folder. Premiere will generate new thumbnails on launch.
On mac: /var/folders/<>/<>/T/ProBrowser
On Win : Users/<>/AppData/Local/Temp/ProBrowser
Both folders are in hidden libraries so for Mac:
Navigate to the depths of your hidden library folders. Search Finder for “/var” and then you have to hunt through the folders that are not blocked for you until you find the /T/ProBrowser folder.
On Windows:
Open the Control Panel.
Select File Explorer Options.
Select the View tab of the File Explorer Options window.
Choose Show hidden files, folders, and drives > Apply > OK.
You can also just type %AppData% in the Run bar to get to access to those folders.
3) No it doesn't, neither custom nor standard nor stock ones.
4) I've never seen this issue in the events.
a) I updated my GPU drivers and system ones recently. b) Yes, I set 125% and changed it to 100% and then restarted PC, however it didn't solve my problem.
I'd like to help you resolve this is possible. So I have some questions for you: (1) What version of PrPro are you running? (2) What OS are you running it on? (3) If you apply a stock mogrt, does that local copy show a thumbnail (sort the browser by recent to see what you just applied) Note: Use the free check box in the Adobe Stock tab of the Essential Graphics Panel to apply a free stock mogrt. (4) Do you see an error in the Events window that says something like, "Unable to read image file: GDI status invalid parameter"?
Beyond that, here are a couple of things you might try to get this fixed: (a) Update your GPU drivers (b) Check your system's display setting to see if scaling is being used, and if so, try turning that off to see if it fixes the problem for you.