Hi again, borate
The solution you proposed certainly works if one can afford cropping the video. But this would not be nice e.g. in the case of cutting heads off. I found a workaround myself.
VideoPro has the nice property that you can hide tracks during editing and export. So, I double the left or right aligned text clips on separate tracks, and hide the non-wanted ones during the export. I found out that when I move the text four squares to the right or left, it is OK in the exported HD file.
For your information I send you the link to the new portable project file and an export in HD.
https://we.tl/t-Y03MihdOuT