Labels are not shown in entire extent if map is rotated

[qgib]

Author Name: Jochen Huber (@huber-j)
Original Redmine Issue: 12388
Affected QGIS version: master
Redmine category:labelling

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We have a situation where a group of point features is oriented north-south and the map is rotated to fit in a narrow panorama-format layout.
Labels are only drawn in the central part of the map, not in the rightmost and leftmost parts.
I suspect that the extent for which labels are drawn is calculated before the rotation, so that anything that would not be visible in the map if no rotation was applied is not being labeled even if it is visible in the rotated map.
An example is attached - move the map extent to the left and right in print composer to see the effect (labels vanishing and reappearing near the borders).
Maybe this is somehow related to other issues with labelling and rotation (see ticket #20228).

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• Example.zip (Jochen Huber)

[qgib]

Author Name: Giovanni Manghi (@gioman)

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There now a number of issues related to labelling and map rotation, not sure where the source of the problems is.

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• version was changed from 2.8.1 to master
• operating_system was changed from Windows to
• os_version was changed from 7 Prof. to

[qgib]

Author Name: Sandro Santilli (@strk)

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Please make sure to add the "rotation" tag to all these bugs. It will help to find duplicates.

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• tag was changed from to rotation

[qgib]

Author Name: Mike Taves (Mike Taves)

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See more info and images showing the behavior in #20577

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• fixed_version_id was configured as Version 2.8.2

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• fixed_version_id was changed from Version 2.8.2 to Version 2.10

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Fixed in changeset "5462e4029e6001088c696dc9ceeaf2cc42264ce4".

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• status_id was changed from Open to Closed