Moving subtitles in potplayer

[Valerio]

Hey there! My problem is pretty simple. I can't move subtitles vertically in potplayer. However, I can move them horizontally.
Until now I've tried the following:
Pressing alt+down arrow all the way up to 100% and way back to 0%
Pressing down in control pannel all the way up to 100% and way back to 0%
Changing the vertical position percentage in font style

It seems to me it may be a problem related to the file I'm using. The file is in the srt format. Maybe other files, even with the same format, won't give problems.
EDIT: I even tried the beta and some 2015-2018 versions of the program but to no avail.