Hi, I am a KDE Neon user too. While I never had this specific problem, I had various severe bugs appear randomly after system updates. Usually they get fixed again in future updates. So check regularly for system updates to see if this gets fixed.
Additionally try switching global theme for example from Breeze Dark to Breeze Light. Sometimes the global theme gets corrupted.
Hi, I am a KDE Neon user too. While I never had this specific problem, I had various severe bugs appear randomly after system updates. Usually they get fixed again in future updates. So check regularly for system updates to see if this gets fixed.
Additionally try switching global theme for example from Breeze Dark to Breeze Light. Sometimes the global theme gets corrupted.