Join not processed on project reopen

[qgib]

Author Name: Gordon Hof (Gordon Hof)
Original Redmine Issue: 10500
Affected QGIS version: master
Redmine category:vectors

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When reopening a project, a join isn't processed. The join must removed and readded.

File1.csv = Name,OldKey
File2.csv = OldKey,NewKey
File3.shp = Other,Data,...,NewKey

For File1 add join File1.OldKey - File2.OldKeys
For File3 add join File3.NewKey - File1.File2.NewKey
Save close and reopen
Attribute table for File1 shows data from File1+File2
Attribute table for File3 shows fields from File1+File2 but all are NULL
Remove and readd File3 join and all is well.

Other clues:
Joining File3.NewKey - File2.NewKey and File2.OldKey - File3.OldKey can be reopened just fine.
Order of layers doesn't matter.
Project xml appears to be correct, and reopened file shows the joins correctly

[qgib]

Author Name: Gordon Hof (Gordon Hof)

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Oops, missed some:
Category: Project Loading/Saving
Platform: Win7Sp1-64bit

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Confirmed on master/linux.

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• version was changed from 2.2.0 to master
• category_id was configured as Vectors

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Fixed in changeset "b1450802b99ac4a19b5ed4765066bcdf1e520556".

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• status_id was changed from Open to Closed