Selecting features hangs QGIS 2.12.0 on OS X

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Author Name: Michal Jurewicz (Michal Jurewicz)
Original Redmine Issue: 13826
Affected QGIS version: 2.12.0
Redmine category:map_canvas

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I found problem with newest QGIS 2.12.0 on OS X 10.11.1. Selecting any features hangs QGIS. First few selection works fine but after a few any next selecting/deselecting takes more and more time and finally hangs QGIS completely. For now it make QGIS totally worthless for editing vector data.

BTW I'm working on SHP files with EPSG:4326 projection and UTF-8 encoding.

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• Sample_data.zip (Michal Jurewicz)

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Author Name: Giovanni Manghi (@gioman)

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did it happen in previous qgis releases? can you attach sample data?

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• status_id was changed from Open to Feedback

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Author Name: Giovanni Manghi (@gioman)

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• category_id was configured as Map Canvas

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Author Name: Michal Jurewicz (Michal Jurewicz)

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I send you some sample data. By the way it is EPSG:2180 not 4326.
At this moment I noticed one more thing, it happens only when selecting features on layer which is in edition mode. When layer is not editable selecting works fine.

And on versions 2.8 and 2.10 selection features worked fine.

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• 9314 was configured as Sample_data.zip

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• Sample_data.zip (Michal Jurewicz)

[qgib]

Author Name: Giovanni Manghi (@gioman)

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cannot replicate on qgis master/linux. Can you test on other platforms?

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Author Name: Giovanni Manghi (@gioman)

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forgot: this can be very well be caused by a 3rd party plugin. Please try without any plugin active.

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Author Name: Michal Jurewicz (Michal Jurewicz)

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It was good idea to check plugins. At first a disabled all plugins (3rd party and genuine ones) and problem disappeared. So I made enable all plugins back and problem didn't come back. Some plugin needed reactivation.

BTW when problem occurred it looked like this: http://quick.as/pQ2audPbk

Thanks for helping me!

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• status_id was changed from Feedback to Closed

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Author Name: Michal Jurewicz (Michal Jurewicz)

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My happiness was to early, problem occurred one more time. However this time I target which plugin makes problem and it is Digitizing Tools.

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Author Name: Steve Lowman (Steve Lowman)

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I agree. It is since the last upgrade to the Digitizing Tools plugin.
We are working with shapefiles in QGIS 2.8.2. The hanging and crashing happens as already described. I thought it was happening quicker after some edits like splitting and merging of features, but yes it hangs when you click a feature to select, and the hanging gets progressively longer in duration until it just hangs and does not come back.
We are currently keeping the plugin disabled, and just enabling it temporarily when we need to use a tool, then disabling again.