- some combinations of skills can't be picked (and are not forbidden combinations).
- new heroes skills aren't balanced
- 1.28 issues with Motred, Medusa. Troll and Roshan (hero).
or active items like Midas, Satanic or Wards
Mixing both protocols will result more desyncs.
Advice. Moving to 1.26 protocol will result games without desyncs/Enconn errors.