LrC does not recognize any files Canon R5 formatted cards
When I open the import dialogue in LrC (11.2) with either the R5 connected via USB cable to my iMac (Retina 5K, 27-inch, Late 2014, running on macOS 11.6.2) or with the SD card inserted in the iMac's built-in SD card reader, LrC does not see any files on the storage cards.


The first picture above shows LrC in Library mode the R5 not mounted although the EOS Utility window on the right to the file locations proves that the camera is actually tethered. The second picture shows the LrC import dialogue. The German words "Keine Fotos gefunden" translate to "No photos found".
My current workaround is to use Canon's EOS Utility software to download the files to my SSD, where I store all my work-in-progress files. From there, I add them to the LrC catalogue.
Needless to say that this is cumbersome and I do expect LrC to be capable of importing directly from the camera, thethered via USB cable or WiFi or via card reader, which it did nicely until recently.
I can't exactly pinpoint when LrC started to behave this way and it may not only affect my R5 but also my previous 5D IV. Unfortunately I can't be sure with regard to the latter as the 5D IV is now packaged and ready to find a new owner.
I wonder if someone else experienced similar import issues and if yes, how these were fixed (if they were, that is).
Thanks for any hint that may point me in a suitable direction.
