ID 379070 - Mari does not show already saved Filter Presets.

Problem summary

Mari does not show already saved Filter Presets.

Customer reported version

4.2v2

Customer reported platform
windows7

Steps to reproduce

1) Open Mari and an example project

2) Go to Filters>Gamma

3) Turn on the Preview and change the Gamma

4) Save the Gamma filter as a new Preset by pressing the cross next to the Presets

5) Enter a name for the preset and save it 

6) Go back to Filters>Gamma and check the Presets from the dropdown menu

result: There is no saved Preset 

Workaround
Unknown

Reproduced by support
This bug has been reproduced in:

Mari 4.2v2 - Windows 10 - CentOS 7 

Mari 4.2v1 - Windows 10 

Mari 4.1v1 - Windows 10

Mari 4.0v1 - Windows 10 - CentOS 7 - regression

Unable to reproduce bug in:
Mari 3.4v4 - Windows 10 - CentOS 7 - OSX 10.13.6

Mari 3.4v1 - Windows 10 

Mari 3.3v1 - Windows 10 

Earliest version tested
3.3v4 - This issue no longer appears in this version and has regressed
 

Expected behaviour
Mari should show the created Filter Presets

Actual behaviour
There is no saved Filter presets under the Presets dropdown menu