Resizing dialogs might lead to extension of clickable checkox area

I sometimes click above the "OK" button when pulling a branch and accidentally activate the "Launch Rebase After Fetch"-checkbox. See the screenshot, I'm holding down the mouse button and as you can see the checkbox has an 'active' state.

What steps will reproduce the problem?

1. Pull any repository
2. Click above the OK button on the same level as the checkbox
3. The checkbox is activated

What is the expected output? What do you see instead?

I expect to happen nothing

What version of TortoiseGit and Git are you using? On what operating system?

2.4.0.2 on Windows 10

Please provide any additional information below.