ID 462474 - Merge nodes lose UI colours of Swizzle parameters if a Project is saved, closed, and reloaded

Problem summary

Merge nodes lose UI colours of Swizzle parameters if a Project is saved, closed, and reloaded

Steps to reproduce

1. Launch Mari.
2. Open any Project.
3. Create a new Merge node. Note that it has the RGBA colours in the UI.
4. Save the Project, close it and reopen it.
5. Open the Node Properties of the same Merge node.

Expected behaviour

Color preview visible

Actual behaviour

Color preview not visible

At this stage, you could also create a second Merge node and see both nodes' properties at the same time. The older node won't have the UI colours, but the new one will.

Workaround

No known workaround.

Reproduced by support

This bug has been reproduced in:

Mari 6.0v2 - Windows 10 - CentOS 7

Mari 4.7v1 - Windows 10 - CentOS 7

Unable to reproduce bug in:

Mari 4.6v4

Earliest version tested
Mari 4.6v4 - This issue doesn't appear in this version and has regressed