Comment 2 for bug 1627537

This is not related to a specific OS, I'm affected on Xubuntu 16.04 (and formerly 12.10) as well.

Though I don't actually regard it as a bug but a feature. I use it regularly to "paint" big areas. It's also easy to fix (by clicking in the main window) and, if necessary, can be undone without trouble. So does it really have to be fixed?