SUMMARY After the latest update, I noticed a transparent icon appears inside the thumbnails of the audio files on the right side which is kind of annoying STEPS TO REPRODUCE 1. Open Dolphin 2. Open any folder contains audio files OBSERVED RESULT A transparent icon appears inside the thumbnails on the right side EXPECTED RESULT Only the thumbnail of the audio file SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon 5.20 User Edition KDE Plasma Version: 5.20.3 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.1
These little transparent overlay icons have actually always been there (or at least the code to generate them has always been there) but the "feature" has beenremoved in the 20.12 update. Note that the weird transparent purple icons are actually baked into the thumbnail image itself so after 20.12 is released, you may need to delete ~/.cache/thumbnails/ to have all thumbnails re-generated if you want them gone forever.
I did not notice the purple icon before. Good to know that it will be removed from the next release. Thanks for your reply.