Empty export file #1400

Hi.
I'm trying to export certain rows only, but whenever I execute the action, the output file is empty. I tried different output formats and different databases (always MySQL), but the result is always the same. I checked the issues and I see nothing open.

I tried both by selecting the rows and right-clicking to Export, and by using the Export button on the top toolbar above the result table.

Different outcome if I right-click on a table and export: with this, the export toaster/popup appears and the spinner spins forever.