Fixed Mars's Arena of Blood allowing some flying abilities to take enemies over the wall
Fix intended for 7.32 got properly implement with 7.32b today. Flying units like Wyvern, Night Stalker, Visage etc. can't just fly in/out of Mars's ultimate anymore.
However this change also affects many other skills that people have been relying on to escape the ult (this is an intentional change according to Github).
Example: Pangolier's Shield Crash / Swashbuckle.
Skills that could leave Arena before but no longer can include; Tether, Celestial Hammer, Icarus Dive, Concussive Grenade, Earth Shaker's Sceptre, Heavenly Jump, Toss, Dispose, Blast Off!, Rolling Boulder
and possibly more.
Obviously blinks like AM/QoP (and also e.g. Burrowstrike) still work.
Source: https://www.reddit.com/r/DotA2/comments/x1xufc/psa_tons_of_skills_can_no_longer_leave_marss/