This Olive: https://olivevideoeditor.org

It's really ambitious, it tries to rival DaVinci Resolve with its node system, I already appreciate it a lot for its performance, though it might be lacking in some features for now.
One of them was masking, one time I even used Blender for a project (that I never completed), because its masking feature is just better and stabler, trying to animate the nodes of mask paths in Olive completely crashed it. It was some time ago now, though, so it might already be fixed.

Still, Blender is kinda underrated as a video editor, it's very capable and it's incredibly stable, I think I experienced max 1 or 2 crashes if any, while Kdenlive has always been pretty crashy for me, it also doesn't get enough love from the devs, there's so much potential in integrating the 3D viewport into the VSE, ahh if only...
Aaand now this turned into a Blender ad for some reason, lmao