Kdenlive 21.04 comes with lots of interface and usability improvements and many bug fixes. There are also new Typewriter and Strobing effects as well as Effect Zones, which give you the ability to apply effects to track and/or timeline regions. A new Speech-to-Text feature to automatically transcribe audio to text as well as create automatic subtitles and a Media Browser widget to easily browse and add your source material to your project. The Online Resources has been converted into a widget and buffed with more media providers. Not to mention tons of under the hood polishing in preparation for Qt6 and MLT7. Oh, and there are horizontal zoombars in the timeline. 
Please test and let us know if you encounter any issues.
https://kdenlive.org/en/2021/04/kdenlive-21-04-released/
Happy editing