[0.16.21] - 2026-09-06

If you are upgrading from v0.16.x, replace the binary (or run docker pull). If you are upgrading from v0.15.x and below, please read the upgrading documentation for more information on how to upgrade from previous versions.

Added

Changed

• Sieve: Messages generated by user scripts are DKIM signed through the new SieveUserInterpreter.dkimSignDomain setting, which defaults to the account's own domain.

Fixed

• JMAP:
  • CalendarEvent/set requests that ask for scheduling messages are rejected with a forbidden error when the account cannot send them.
  • Calendar/get and AddressBook/get return every property when the properties argument is omitted or null.
  • EventSource ping events advertise the interval in seconds rather than milliseconds.
  • Calendar synthetic ids returned when expanding recurrences identify an occurrence by its recurrence id.
• IMAP: Every command in a pipelined STATUS or FETCH batch receives its tagged completion, instead of the first failing command dropping the responses for all commands queued behind it.
• WebDAV: Accounts without a storage quota no longer advertise a 4 GiB limit in DAV:quota-available-bytes.
• MTA: Inbound DMARC and TLS aggregate reports that a reporter sends more than once are imported again as a duplicate entry.
• Spam filter: Domain and URL blocklists are queried only for text written as a link.
• iTIP: Detaching an occurrence that the recurrence rule already generates is sent as a METHOD:REQUEST carrying the RECURRENCE-ID instead of a METHOD:ADD.
• Sieve: fileinto :specialuse and specialuse_exists accept special-use attributes in the \Trash form.
• LDAP: Active Directory servers that answer an unauthenticated bind (a non-empty DN with a zero-length password) with success no longer authenticate accounts without a password.
• Network: Listeners bound to the unspecified IPv6 address ([::]) fall back to IPv4 when socket creation fails with EPROTONOSUPPORT.
• OpenTelemetry: log exporter does not include the parent span's attributes.

Check binary attestation here

0.5.5 (2026-09-06)

• Feature: [#26423] [Plugin] Add PathNavigator and PathConnection for exploring the footpath network as a graph.
• Feature: [#26827] [Plugin] Add map resize hook to scripting api.
• Feature: [#26877] Clear Scenery can now remove footpath additions, and remove walls separately from small scenery.
• Feature: [#26938] [Plugin] Allow getting and setting caret position for textbox while it is in focus.
• Improved: [#16269] Unnamed rides in the original Added Attractions & Loopy Landscapes scenarios now use their official names from Rollercoaster Tycoon Classic.
• Improved: [#19000] Add sprite font glyph for the Won (₩).
• Improved: [#21441] Add sprite font glyph for the Hryvnia (₴).
• Improved: [#22500] LandSetHeightAction has now proper error message title.
• Improved: [#23872] Loading a park outside the game now sets the folder of the load/save window, as loading one in-game does.
• Improved: [#25362] When dragging footpaths, they will now properly adapt to uneven terrain.
• Improved: [#26099] The ride type selection cheat has been moved into the ride operations tab.
• Improved: [#26099] The ride visiblity cheat has been moved into the ride colour/appearance tab.
• Improved: [#26441, #26958] Change result.position.z of SmallScenery- and WallPlaceAction to match the actual position of the placed tile element.
• Improved: [#26862] Add a Liquid Glass app icon for macOS 26 and later.
• Improved: [#26931] The save prompt now bounces the macOS dock icon, flashes the Windows taskbar button and marks Linux windows urgent when it blocks quitting an unfocused game.
• Improved: [#26936] Rain is now drawn next to the top toolbar, but only when it is centred.
• Improved: [#26996] Ride names in scenarios can now be autopatched.
• Fix: [#7858] Dropdowns do not close when an action by a plugin or another player in multiplayer closes their parent window.
• Fix: [#15891] Lower case hard sign is drawn as upper case.
• Fix: [#18197] Track Designs Manager does not autoload scenery.
• Fix: [#18415] Preview in the Track Designs Manager is not updated after deleting the first design.
• Fix: [#18782] Dropdowns do not close and become non-functional when mouse is released outside of the game window.
• Fix: [#21632] [Plugin] Crash when loading custom image larger than 300 by 300 pixels.
• Fix: [#22854] Network connections of plugins pile up every time another park is loaded.
• Fix: [#24520] The close button does not use the sprite font on languages using a TTF font when the enlarged UI is enabled.
• Fix: [#24610] Graph tabs on Finances window get a little bit longer every time you switch between them.
• Fix: [#25169] The convert command strips custom objects from the resulting park.
• Fix: [#25496] The guest pickup button does not grey out when the guest’s state changes while the window is open.
• Fix: [#25558] [Plugin] Image buttons ignore their explicit border setting when a theme draws borders around them.
• Fix: [#26056] Freeze when trying to download all objects on save where they are missing.
• Fix: [#26802] Opening rides with 0 or -1 water cars per train crash the game.
• Fix: [#26811] Crash when a ride points to a non-existing station object.
• Fix: [#26816] Water rides ignore zero clearances, preventing adjacent terrain modifications and building them anywhere.
• Fix: [#26880] Max negative G-Force stat on flat track erroneously reads as 0.49g.
• Fix: [#26903] Making a ride visible or invisible is always denied in multiplayer.
• Fix: [#26917] Tile Inspector does not show indestructible track status correctly when ‘Make all track pieces destructible’ cheat is enabled.
• Fix: [#26921] The bottom panel buttons for finances, park rating, date, etc. are not invalidating properly.
• Fix: [#26935] Windows opened on the title screen do not ‘flash’ around the edges when bringing them back into focus.
• Fix: [#26938] [Plugin] Caret in textbox not animating or blinking.
• Fix: [#26954] Land paint price is not updated when selecting columns or rows of tiles by holding down Ctrl.
• Fix: [#26965] When showing missing objects, some types show up as ‘Unknown type’.
• Fix: [#26965] The window with missing objects is displayed under the ‘Load game’ window.
• Fix: [#26992] A partial or no car is drawn on the ride vehicle tab if the ride has 0 or fewer cars per train.
• Fix: [#26996] Correct spelling of some rides in Heide-Park, Diamond Heights and Alton Towers.
• Fix: [#26996] Scenario patch for Okinawa Coast doesn’t work for CD versions of Wacky Worlds (meaning landscape ownership fixes do not get applied).
• Fix: [#27004] Windows are moved off-screen when mouse is released outside of the game window.
• Fix: [#27023] [Plugin] Transparent plugin sprites do not work correctly in software rendering mode.

Release created in https://github.com/OpenRCT2/OpenRCT2/actions/runs/34024796628

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