When trying to edit a vector layer using node tool, i get constantly the next message:
Normally it appears once at the beginning of the edition and then it doesn't show any more, but now I get it constantly. It blinks very fast and I can't even edit the line.
I've tried to save this layer again as another shapefile. I have closed and re-opened the software. I have disabled all the plugins (just in case it's a matter of memory or rendering). None of this tries solved anything.
It is not the only layer where this happen, so I think the problem is not a corrupted file (or maybe everything is corrupted).
Anybody knows why this is happening and how to solve it?
(QGIS 2.8.6 on Windows 7)