Scrollbar no longer works with my pen tablet

Hi all,

After the most recent update (I am now using Version 102.6.1) the scroll bars in the inbox, sent items, etc. no longer work with my Wacom Intuos pen tablet,
which means that I continually have to switch to my mouse.
The scrollbars in the adressbook and agenda still work properly.

It is also no longer possible to use my wacom pen to select text inside an email.
This used to be no problem.