Ubisoft published a Year 10 Season 4 patch notes for Rainbow Six Siege that cover an install size reduction and a host of test-server fixes found during the Y10S4 cycle. The company says players should see about 15 to 20 GB reclaimed on consoles and up to 35 GB on PC, and it links the full Operation Tenfold Pursuit patch notes on the official Rainbow Six site for the full feature list.
It follows the pattern of the previous Year 10 Season 3 patch notes, where Ubisoft listed many FIXED items discovered on the Season Test Server. We previously highlighted that Y10S3 notes as a focused round of test-server fixes that included AI pathing, bot behavior, and visual corrections, and that coverage is available at our Y10S3 patch notes highlights.
Patch Notes – Y10S4 Addendum
INSTALL SIZE UPDATE
In this update we’re introducing several optimizations aimed at reducing the game’s overall install size. Players can expect savings of approximately 15-20 GB on consoles and up to 35 GB on PC.
BUG FIXES
GAMEPLAY
- Fixed – Players can’t spectate the closest ally upon being eliminated in Dual Front.
- Fixed – Maestro’s Evil Eye can be placed in a hard to reach area in B1 Diving Room on the Kanal map.
- Fixed – Attackers can trigger Denari’s T.R.I.P connector through walls.
- Fixed – AI Operators will attempt to melee gadgets through walls when the gadgets are placed on a door frame during Field Training.
- Fixed – AI Operators don’t react to being pinged during Field Training.
- Fixed – Players are unable to pick up the defuser if it’s dropped inside a barrel on the Oregon map.
- Fixed – Azami’s Kiba Barriers can provide rooftop access via the hatch at 2F Logistic Office on the Clubhouse map.
- Fixed – Aruni’s Surya Laser Gate detects players from a longer than intended range when deployed on breakable walls.
- Fixed – Aruni’s Surya Laser Gate is able to deal friendly fire and damage to Aruni.
- Fixed – The PMR90A2 has lower damage drop-off than other Designated Marksman Rifles.
- Fixed – The PMR90A2’s hipfire spread decreases when the Player is prone.
- Fixed – Swapping between weapons with the accelerated weapon swap causes a short delay in firing.
LEVEL DESIGN
- Fixed – Hatches are not pre-destroyed in Deathmatch in Modernized maps.
- Fixed – Multiple rappel hooks are missing or misplaces on the Clubhouse map.
- Fixed – Multiple rappel hooks are missing or misplaces on the Chalet map.
- Fixed – Multiple rappel hooks are missing or misplaces on the Border map.
OPERATORS
- Fixed – Clash can be headshot through her shield while sprinting on stairs.
- Fixed – Rauora can’t redeploy a D.O.M. panel on a door after one has been destroyed.
- Fixed – Kapkan’s Entry Denial Device can be deployed facing the wrong way.
- Fixed – Dokkaebi can get stuck in the Observation Tool after hacking an opponent’s phone.
- Fixed – Maestro’s Evil Eye can be spotted through walls while active by the glow of the laser.
USER EXPERIENCE
- Fixed – Frost’s Welcome Mat stays stuck on an Operator’s leg after being revived by an ally.
- Fixed – Texture issue on light bulb affected by EMP at B Servers on the Consulate map.
- Fixed – Previously highlighted packs are accessed when quickly browsing the packs in the Locker.
- Fixed – Clearance Level Reward Modal incorrectly shows Operators as owned before unlocking.
- Fixed – Operator Guide videos will continue loading when accessed during gameplay.
AUDIO
- Fixed – Solis’s SPEC-IO Electro Sensor sound effects can be heard at the beginning of a round.
There are also links in Ubisoft’s to the game’s social channels and to R6Fix for reporting bugs, which is where players should send any lingering issues if they see them after the update lands live. If you want to compare this cleanup pass to other recent Siege maintenance notes, our Y10S3.3 patch notes summary covers the small balance tweaks that shipped earlier in Year 10. If you have thoughts about the install size savings or spot anything odd after the update, leave a comment and follow our Siege coverage on X, Bluesky, and YouTube.
Tom Clancy's Rainbow Six Siege X
Developed by Ubisoft Montreal
Rainbow Six Siege X is the reference in tactical team shooters, where elite strategy and execution triumph. Enjoy free access to Quick Match, Unranked and Dual Front game modes with a selection of operators.
- Genre: Shooter, Tactical
- Platforms: Xbox Series X|S, PlayStation 4, PC (Microsoft Windows), PlayStation 5
- Modes: Multiplayer, Co-operative
- Release: 2025-06-10
- Publisher: Ubisoft Entertainment
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Age Rating:
PEGI 18
