Changed project resolution, now rendering "corrupted"

[B.M.]

Hi

I just realized that my project had the wrong settings: instead 4K UHD I had
started with 4K DCI, so it's a bit wider than I wanted.

So I decided to change the project resolution to 4K UHD and I got some "size &
alignment problems", maybe especially where I used transform.

So far so good and expected... I saved this version with a new file name and
corrected all such errors.

Then I started rendering this new version. And I got many such errors again.
Basically, while within kdenlive itself, everything is fine, when rendered I
get the errors.

Unfortunately this is also true for the old versions, so before I changed the
project resolution.

1. Why is this the case? I didn't expect that and don't understand it.

2. Is there a working "way back"? I don't like the idea to completely start
from scratch with this video...

Thank you.

Best regards,
Bernd