"Super-sized" fonts in fillable fields in all pdf's

Hi,

I have searched, but can't find anything that helps. When trying to fill out fields in downloaded pdf's from different organizations, the font size initially looks normal and I can fill in all fields with a regular size font in the browser. As soon as I try to print or save, the font size changes to a ridiculous "super"-size, and the text runs out of the fields/can't be read anymore. If I open the pdf in adobe acrobat reader to fill it in, the text size is normal as long as I am in the field typing, when I jump to the next field the same phenomenon happens, the previously normal text size changes to the super-size (the largest font the field can hold height-wise, it seems).

Happens with any pdf with a fillable text field from any source (not self-created).

I'd really appreciate any help. Thanks!

Martin