Point displacement - weird behavior with multiple layers for a symbol

[qgib]

Author Name: Jérémie Prud'homme (@lim-on-air)
Original Redmine Issue: 21143
Affected QGIS version: 3.4.4
Redmine category:symbology
Assignee: Nyall Dawson

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Hi,

I have a point layer with several types of vehicles (column type) and some points are at the same place.
I choose point displacement for my layer style and Categorized as renderer.
When I choose a one-layer symbol for my vehicle type 'CCFM' for example, the point is well placed ( = around the original point when there are other vehicles too).
When I choose to add a second layer for that symbol (for example the default red point of Simple marker), the point is going nuts and is no more near the original point. Surprisingly, the point with the 2 layers symbol is well place if there is no other vehicle at the same place.

Hope my description is clear enough !

I tried it with QGIS 2.18.24 and 3.4.4.

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• 2019-01-31_Bug_PointDisplacement_after.jpg (Jérémie Prud'homme)
• 2019-01-31_Bug_PointDisplacement_before.jpg (Jérémie Prud'homme)
• TestPointDisplacement.gpkg (Jérémie Prud'homme)

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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I can't reproduce. Can you share your style?

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Jérémie Prud'homme (@lim-on-air)

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Here is a gpkg file with test points and style included.

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• 14227 was configured as TestPointDisplacement.gpkg

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• TestPointDisplacement.gpkg (Jérémie Prud'homme) - Test points with style included

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• status_id was changed from Feedback to Open

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Confirmed

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• status_id was changed from Open to In Progress
• assigned_to_id was configured as Nyall Dawson

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Applied in changeset 867e399.

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• done_ratio was changed from 0 to 100
• status_id was changed from In Progress to Closed