I just did an update to Photoshop CC 21.1.2 yesterday, and used it for a little afterwards. Importing an image just made massive pixels, so I closed the program, reopened it and the image imported just fine. Today I was having the same issue. So I closed the program, opened it, and still continued to have this issue AND then some. When creating a text box, the program would freeze and wouldn't close unless I shut down/restarted my computer. The update says it addressed/fixed these issues, but for me it seems as if it created these issues - I wasn't having any problems prior to the update.