Bug result after test plan :
In dolphin with the information panel
Select a video
Play the video
Disable the preview through the context menu (the video stays playing and visible and this will get fixed in a subsequent review)
Stop the video -> the video preview reappears when it should not
Applications/19.04, because bugfixes always go to the stable branch by definition.
Note that until the feature freeze on March 21, every commit should go to Applications/19.04, unless it's something we don't want to ship in the upcoming release (e.g. a new feature which could break things).