[BUG] Selecting multiple images does not change the preview image to the most recently selected image

[WoojFiero]

Describe the bug
When holding down shift and using arrow keys or holding control and selecting several images the preview on the right does not currently consistently update to the newest selected image

Version:
1.3

To Reproduce
Select any image and then hold down shift and use the arrow keys to select more images
OR
Select any image and then hold down control and select additional images with the mouse

Expected behavior
The preview should show the most recently selected image when selecting several images at once. Currently it only updates when using the left or right arrow and after moving to a new row.

Source Image or Screenshots
As you can see, the left-most selected image in the thumbnail array is still the active preview even though it was the first image selected in the batch

Thank you for the program, it's awesome so far <3

[acorderob]

v1.4 only does this when selecting with the mouse. Using shift+cursor does not.