To whom it may concern:
As the topic title described, I just had "Tag Tree Fell Down 3 Times During Moving Between Parent Tag", two times happened in the last version, one time happened in the most updated version, I used last version for an unsolved issue mentioned in another thread, I hope this issue fixed as soon as possible, I am in a middle of a re-organization of my 1500 tags. Thank you for your attention.
Regards,