did it do it again without the follow module on?
If it no-longer does when the follow module is off then its jamba-follow doing the follow.
i Don't know what part of the module is re-doing follow its hard to tell... The only thing that might make it seems like "follow" after combat, Is if strobe is on.... (and i sometimes press shift + Ctrl + f* that used to be keybinding to turn on jamba follow in Isboxer)
I guess the only way you can test it is run jamba-follow wait for it to do it then (do not reloadui ui) then try a few command lines.
/jamba-follow strobeoff all
if that stops it then its strobe (for some reason truning on isboxer???)
now it it really only "after" combat then try this command:
if its this one ill have to look more into why its turning on but its not for anyone else.... i would not think any other addon would make it do this.
/jamba-follow aftercombat off all