Via HLDS:
Valve- Fixed an exploit related to not respawning in the spawn room at the beginning of Casual and Competitive matches
- Fixed Pyros griefing teammates by attacking them with the flamethrower
- Fixed Medics getting a permanent speed boost after healing a charging Demoman
- Fixed Medics getting the Demoman's charging speed when using Mediguns other than The Quick-Fix
- Fixed the Strange Razorback double-counting the number Spies shocked
- Fixed a bug related to the Sniper's zoom and taunting
- Fixed players being able to pick-up the PASS Time jack while they are stunned
- Increased the matchmaking system's preference for matching large pre-made parties against each other in Casual Mode. This should result in more balanced matches, but may cause a slight increase in queue times for larger parties.
Rumor has it:
- sigsegv__ (everyone's resident responsible bug reporter that allows Valve to take them out back) provides some additional insight on reddit into the flamethrower griefing bug that was fixed
- Only thing of real note in this GameTracking diff is the fact that the TF2Maps 72hr TF2Jam Summer Participant medal is now nameable, and a typo was fixed in The Black Watch's description, where "battalion" was misspelled as "batallion"
- Those changes are also reflected in the item schema update as well: https://github.com/SteamDatabase/SteamTracking/commit/1c958a9b23c1e3fb4884d224eba618955ad76745
- Size is ~15 MB