Checkboxes in clip audio channels did not update

When I change the Audio Clip channels the checkboxes do not reflect the changes correctly.

Steps to reproduce this issue:

1. Open the Clip Audio Channels dialog

2. Change the preset to Mono

3. Check the right channel for Clip 1. This should deactivate the left channel automatically but the checkbox remains visible.

Actually my changes will update the clip after commiting the dialog but it is hard to see whats going on.