Annoying "Working..." message stays on when starting videos

Often when I start a new video the word “Working…” is displayed in the middle of the screen. This usually goes away after a few seconds but sometimes it doesn’t go away at all, or persists for minutes. The video is playing fine, just with this message on the screen right in the middle.
How can I stop this happening?
I’m on the latest OMC update August 2021 on Vero 4K+

Edit to add debug logs:

To get a better understanding of the problem you are experiencing we need more information from you. The best way to get this information is for you to upload logs that demonstrate your problem. You can learn more about how to submit a useful support request here.

Depending on the used skin you have to set the settings-level to standard or higher, in summary:

  • enable debug logging at settings->system->logging

  • reboot the OSMC device twice(!)

  • reproduce the issue

  • upload the log set (all configs and logs!) either using the Log Uploader method within the My OSMC menu in the GUI or the ssh method invoking command grab-logs -A

  • publish the provided URL from the log set upload, here

Thanks for your understanding. We hope that we can help you get up and running again shortly.

OSMC skin screenshot:

Note my edit of the original post. Link to logs here