How to fix Export dialog for .PNG files?

I was working on three .CDR files last week and had to export them both as .PNG and .PDF files. All went well until I changed some settings I can't remember now precisely. All of a sudden, the dialog box to export to .PNG has a lot of its options missing.

I tried several other file formats and they are working OK as to the dialog. This issue happens only with .PNG. Any idea on what's happening and how to fix it?

I tried a system restoration point from two days before the issue TNA. I also tried to repair the CorelDRAW suite installation. TIA.

System info:
Windows 10 Pro 21H1 19043.1865