Not sure, if it's already logged issue for R# 7, but it would be nice to fix it somehow in R# 8:
When I select some text right next to the left page border and I want to move it using mouse, the R# overlay box is shown and I cannot select the text behind it.
See the image:
- the text "#else" before selecting
- the text after selecting
- when I move my mouse over the selected block for drag&drop moving it