[Qgis-developer] serious regression out of new vector api needs attention prior to 2.0

[Luca Lanteri]

It's a known and very annoying bug.
Issue was already reported in:
http://hub.qgis.org/issues/7321
http://hub.qgis.org/issues/7472



2013/4/23 Mathieu Pellerin <nirvn.asia at gmail.com>

> Greetings,
>
> I've filed an issue over the weekend which IMO is a really serious
> regression which shouldn't be left unresolved prior to the imminent
> 2.0 release.
>
> Long story short, when a layer symbology is set to categorized,
> graduated, or rule-based, all features will disappear when editing
> feature(s) on that layer (by moving feature or one of its vertex). If
> the user then leave the edit mode (saving changes or not), all
> features will reappear.
>
> When features disappear, an error pops up in the log window saying
> "Already active iterator on this provider was closed".
>
> Data itself is not impacted, but it's a super scary behavior for the
> average user. It got me to cancel edits many, many times before I
> understood what was happening.
>
> Issue filed can be reached here: http://hub.qgis.org/issues/7660
>
> Mathieu
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