Photoshop 2020: Wrong saving progress (Windows)

Are you saving locally (e.g. to the desktop) or to an external drive or server?

Locally no matter on which drive. In Photoshop 2019 it worked without issues.

Yeah I have the same problem. It is stuck on 99% and it took really a long time.
This project I'm saving on external drive.

Are you using a version of Photoshop from Adobe.com or another source? I'm not seeing active accounts under either of your email addresses.

I have the same problem.  My copy is from Adobe (21.0.1).  Mostly does the 99% thing but randomly and infrequently reverts to the correct indication upon saving.

I am saving to an attached SSD.  If I turn off Save in Background, then the progress bar shows front and center and behaves normally.  So, it is only when Save in the background has been selected and the progress indicator is on the bottom bar that it misbehaves.

Same issue, getting stuck already at 21% or anywhere...
Working on Mac with Catalina

I have a similar problem where the save progress remains unchanged but only while a menu is open or had been clicked on (like File menu). While you keep this menu open the progress of the save will not complete. When you close the menu the progress indicator will complete on cue.

Unticking "save in Background" show progress bar, but prevents any other actions until file is fully saved. The issue really is that the latest version saves really slowly.

Same issue on PS 21.2.2 on OSX 10.14.6.

Progress bar goes to 99% fast, then the last percent takes a lot of time.