ID 370834 - When opening multiple images from the Image Manager, selecting one of them and choosing any filter, Mari disregards the selected image and previews the filter to all of the opened images.

Problem summary
When opening multiple images from the Image Manager, selecting one of them and choosing any filter, Mari disregards the selected image and previews the filter to all of the opened images.
The issue occurs with all of the filter types under the Filters menu

Customer reported version
Mari 3.4v2

Customer reported platform
ubuntu

Steps to reproduce

1) Open Mari

2) Open an example project

3) Load and then open two or more images into the Image Manager

4) Select one of the images from the Image Manager

5) Go to Filters>Brightness

6) Into the Apply Brightness settings under the Apply To drop-down menu choose Selected Images and turn on the Preview option

7) When changing the Brightness value, Mari is applying the filter to all of the images and not only to the selected image

Workaround
Unknown

Reproduced by support
This bug has been reproduced in:
Mari 4.2v1 - Windows 10 - CentOS 7 
Mari 4.0v1 - Windows 10
Mari 3.4v2 - Windows 10
Mari 3.0v4 - Windows 10
Mari 2.6v5 - Windows 10 - CentOS 7

Earliest version tested
Mari 2.6v5 - This issue appears to be in all versions of the product

Expected behaviour
Mari to preview the chosen Filter to the selected image only, disregarding the opened images

Actual behaviour
Mari is previewing the chosen Filter to all of the opened images, even though they have not been selected