Sometimes when I TP out my hero from an Undead base (having spirit/nerubian towers)
TP succeeds => I am already in my base => and then I saw the coil from Spirit/Nerubian Tower hitting my hero (or my units).
Sometimes they die in my own base, some seconds after TP.
I double checked and they are not affected by disease or other type of spell, just Spirit Tower’s effect.
Update: I just defended my base vs Yellow Tauren (bottom right); Check this out 
Is not related to UD, seems TP has a major bug!!!
https://share-me.video/video/vVfmckCO4bPBEkYDSGbPtfC51qXdXVOijDkgQsuawjvVSukbsAoHybpxM9wu6mpq