Profile settings improperly saved since Jul 28

Hi there! My default profile is 4K, but I am working on a FullHD project now. Since the 28th of July, there is some weirdness to the saved projects. When I load the FullHD project, it's resolution is now 4K, and the timeline preview render is also reset to default.

More than that, the overlays seem to be 4K, but the footage is FullHD. Screenshot:

When I save this very same project with Kdenlive built on 25th July, it saves properly. The project which should be FullHD, saved with Kdenlive Jul28: Total_Re-do-Proxies.kdenlive

The same project somehow saved properly with Jul28, but with this weird -3000 added to the name automatically. (I did manually change the project resolution and frame rate to match the footage) This one loads normally in Kdenlive from today as well as from 25th of July: Total_Re-do-Proxies-3000.kdenlive

This bug was introduced very recently, as Kdenlive pulled from source and built on the 25th of July do not exhibit this bug at all.