Cannot export more than 2 images and all exports don't end properly
I have an issue with exporting on the Mac. The problem is twofold:
1. a maximum of 2 images get exported.
2. every export process (whether up to 2 or more images) never comes to an end (you can see in the top left).
Here is a screenshot to illustrate:

I have started 4 exports:
1. 1 image - this has been exported
2. 2 images - these have been exported
3. 3 images - only the first 2 have been exported
4. the missing third image from 3 - this has been exported
As you can see at the top left, none of the exports are completed correctly. All processes are still in progress (for several hours).
Does anyone have an idea what is going wrong here? I get scared when I think of exports with several dozens or maybe hundreds of pictures...
Since I am a Mac newbie and this is my first Mac after more than 3 decades of Windows PCs, I am not sure if the problem is located in front of the screen. 🤷
BR, Thomas
