A new problem with the TC editor has appeared in the last couple of days.
If you hovere over the icon in the lower left corner to change the dimensioing mode from end point to mid, the message which appears reflects the current mode. For example 'Use Endpoint' when you are currently in endpoint mode. If you switch to midpoint mode the message changes to 'Use Midpoint'.
The message shown has always indicated the other mode which you wish to switcvh to NOT the currently selected mode.
Using Firefox here.