Solving the problem with the "Indexing data" window while editing

Question

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)

Matthias Kuhn · Accepted Answer

It's caused by snapping. I guess you could disable that.

Upgrading QGIS might be the better option though, I'm quite sure it has been solved in newer versions.

Update: Even when they turned off snapping, it continued working in the background. The solution was to open "advanced options" in the snapping menu and disable it for all the layers.

Steven · Answer

It can also be caused by Show Feature Count in the Layers Panel. Uncheck it, if it is checked.

nr_aus · Answer

Just to confirm that in QGIS 3.14, this still persists (from a snapping-indexing perspective at least anyways).

Solving the problem with the "Indexing data" window while editing

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