Play position in score, is not updated when mixer's "Show Channels" view is visible
1) Create a new score, add a chord symbol.
2) Start play. The blue highlight show progress through the score.
3) Show the mixer panel.
4) Click the "Show Channels" button at the top of the one added instrument. Notice that the blue highlight in the score has stopped moving.
5) Click the arrow again to hide channels. Notice that the blue highlight in the score has started moving again.
OS: macOS 10.14, Arch.: x86_64, MuseScore version (64-bit): 184.108.40.2068020600, revision: 3224f34