Followers sleep on invisible beds

Solution 1:

Without resorting to a complete uninstall - as the scripts of script-heavy mods tend to linger after uninstallation, having detrimental effects - I'd suggest just disabling the MHIYH AI on the affacted NPCs.
As per the mod's main page:

To cancel MHiYH on a Follower use Dialogue [You don't like your home] or the MCM.

If you still want to uninstall, be sure to do so only after you made sure that all the followers that have MHIYH behaviour have been 'released' like that.
And, just to be safe, after this step and before uninstalling the mod, make sure you move your character to an interior and wait/sleep for 72 hours, so that certain scripts can reset. For a more thorough resetting, check out the answers here.