Right clicking triggers mouse down reporter and it never un-triggers on Chrome

[BryceLTaylor]

Expected Behavior

If you right click, the mouse down block should not trigger.

Actual Behavior

Right clicking causes Mouse Down to become true, and it doesn't turn off until you click off of the context menu to dismiss it and then left click again.

(On Windows it only briefly rotates and then stops when you right click)

Steps to Reproduce

Load this project: https://llk.github.io/scratch-gui/develop/#228228816
Let it run through until you get to the section that has the crab.
right click somewhere on the stage
Note: the crab starts rotating and a context menu appears
Note: the crab does not stop spinning after you have clicked (on Mac, on Windows it stops)
Left click somewhere on the stage
Note: the crab still doesn't stop spinning but the context menu dismisses
Left click the stage again
Note: the crab stops spinning

Operating System and Browser

Chrome on Mac
Not on Firefox or Safari

Chrome on Windows behaves slightly differently
Not on Firefox or Edge on Windows

[AmazingMech2418]

Cannot reproduce on Windows with Chrome.