Moving too quickly between pages on the popped-out "speaker notes" window resets to non-notes view

[fw-immunant]

To reproduce, tap left and right a couple times while the speaker notes window is focused after popping it out into its own window. It will revert to showing a second copy of the course material, as if the speaker notes window had been closed.

[mgeisler]

Thanks for logging this! The speaker notes system is quite rudimentary and it could benefit from someone with better JavaScript skills than me giving it an overhaul.