I recently switched to version 19.08.2 on Ubuntu 19.10.
When I edit the position, crop start, duration and crop end using the Duration dialog, the following behavior occurs:
1. I Edit the position to a new value.
2. When I click 'ok', the position value takes over the value of crop start en uses that value.
Expected behavior: the position value should stay at the edited value.
Can anyone help?
Walter.

I tested with AppImage 19.08.2b and Windows 19.08.2 -> It wroks as expected. Do you wotk with the AppImage? If not please try with the current Kdenlive AppImage version 19.08.2b to see if there are any packaging issues https://files.kde.org/kdenlive/release/

If the problem/issue doesn't occur when using the AppImage, then it's your configuration or packaging.