In this report i have a link to a Youtube video showing off the glitch. How you recreate it is easy, you have your Original map and your New map you are about to create in your hot bar. you switch to your new map and walk out of the boundary of the original map, when you render the New map the player icon on the Original map freezes.
In the video the left hand map is the Original map and the right hand map is the New one.
Link --> https://youtu.be/z8j-uU84LDM
(The Video was to large of a file to upload to here, if need be i can edit it down and resend this bug report)
Comments 2
MC-72379 is about map pointer being changed too early before leaving the map area. Adam McNeil's issue here is about map pointer staying frozen when reentering first map's area after leaving second map's area.
Does MC-72379 describe your issue?