I noticed an uncanny and particularly annoying new bug when marking a Quiz in MS Forms: After entering a score for a question in the Review page, if I scroll down immediately to the next question, the integer value I just entered decrements by one (or sometimes more)!
The bug occurs in Chrome on a Mac and is hard to pick up. -- It took me quite a while to work out what was miraculously causing the values to change ;) It is due, I believe, to the form field listening to the scroll-wheel.
Needless to say, this bug is particularly dangerous for anybody using MS Forms for tests/exams since the entered grades for questions can change without one noticing!
Can the Microsoft Forms developers please fix this immediately by disabling scrolling on input: