ID 432088 - Changing the color of a procedural color layer crashes Mari

Problem summary
Changing the color of a procedural color layer crashes Mari

This only seems to happen for the attached archive

Customer reported version
mari.4.6v2

Customer reported platform
rhel7

Steps to reproduce

1) Open Mari

2) Import the attached Archive

3) Change the color of the Body procedural layer, Mari crashes

Expected behaviour
To be able to change the colour of the procedural layer

Actual behaviour
Mari crashes without the crash report dialog appearing

Workaround
If you open the Node Graph and find the produral color node, and change the color there, Mari doens't crash.

After resaving the file, Mari no longer crashes when using the original steps

Reproduced by support
Mari 4.6v3 - Windows 10 - CentOS 7

Mari 4.6v2 - Windows 10 - CentOS 7  - Regression

Mari 4.6v1 - Windows 10 - CentOS 7*

*The archive was created in 4.6v2, so to open the archive in 4.6v1 or earlier, it needs converting, which may fixes the issue?

Earliest version tested

Mari 4.6v1 - This issue doesn't appear in this version and has regressed