Fix problem scrolling when mouse cursor is on the plot

Closes #218 (closed)

assigned to @kienle

requested review from @ohosseini

There is a conflict in your code. Fix it before merging and the rest is good.

approved this merge request

added 28 commits

• 81d4e420...08d4b24c - 26 commits from branch master
• bbb4a8c8 - Fix the problem
• 90480b53 - Add comment

Compare with previous version

enabled an automatic merge when the pipeline for 90480b53 succeeds

merged

mentioned in commit 84f20438