I think I see 2 issues introduced into the HTML client. These both relate to moving the window by dragging the title bar.
Both fixes work for me but might need a review.
r21860 - null pointer on server_readonly variable. Fix: https://github.com/mjharkin/Xpra/commit/950ab946b001ebabee36a210957b01850746ae93
r21886 - can no longer move windows if cursor enters "canvas" area of window (e.g. drag window down quickly). Fix: https://github.com/mjharkin/Xpra/commit/29f6cb074511b14c3730df0b322f74b57d112ae1
Thanks for the patches!
The first one is obviously a bug, applied in r21916.
The second one is a bit strange: I don't understand why I added the "return", and I don't see why it would make a difference either! But since you must have noticed a problem, I have also applied it in r21917.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2183