Major problems with Kdenlive since the big Manjaro Linux update on December 8, 2025. Many audio effects distort and overload the sound when these filters are applied:
Compressor/Eypander (avfilter.compand), Crossfeed, Crystalizer, Deesser, Haas Stereo Enhancer, Limiter, Pan, Simple Compressor/Expander (avfilter.acontrast), Stereo tools, Stereo widener, etc.
I have already submitted a bug report, more details there: https://bugs.kde.org/show_bug.cgi?id=513447
There has just (Dez. 17.) been an update to Kdenlive 25.12.0-1.0, but there has been no improvement in some audio effects.
AppImages: no problem.