OpenTTD full changelog

Add: Check that towns can build roads before generating map (#12503)
Fix #12228: Ships could get lost due to pathfinder not considering reversing in some cases (#12474)
Fix #12433: Width of unit number display was too narrow (#12534)
Fix #12502: Desync related to vehicle replacement (#12512)
Fix #12506: Desync after new oil rig is constructed (#12511)
Fix #12584: Crash on some tar files during tar scan (#12586)
Fix: [SDL2] Keypad numbers did not function (#12596)
Fix: Houses and industry tiles could accept incorrect cargo (#12547)
Fix: Map generation stage strings were incorrect (#12549)
Fix: [Script] Allow only 255 league tables, as 255 itself is the invalid id sentinel (#12545)
Fix: Mark vehicle status bars dirty when a vehicle leaves unbunching depot (#12516)
Fix: Do not show train waiting for unbunching as waiting for free path (#12515)
Fix: Smooth outliers in unbunching round trip calculations (#12513)

Fix: Setting tree lines drawn incorrectly for RTL languages (#11070)
Fix #11043: Don't choose toolbar dropdown option if focus is lost (#11044)
Fix #10917: Pay loan interest before generating statistics (#11040)
Fix #11016: Use after free in network invalid packet error path (#11022)
Fix #10987: Double-close of dropdown stopped land-info tool working as default (#11000)

Change: [Win32] Limit hardware accelerated video driver to OpenGL 3.2 or higher (#9077)
Change: More improvements to the GUI at different scales (#9075, #9102, #9107, #9133, #9174, #9183)
Fix: Query windows could be partially drawn (#9184)
Fix #9113: Crash when removing an airport that exists in an aircraft's orders (#9182)
Fix #9117: [Fluidsynth] Hang when changing song (#9181)
Fix: String validation could leave invalid UTF-8 encoded strings (#9096)
Fix: [Network] Out-of-bounds memory access with modified servers sending too short password salts (#9176)
Fix: Crash when extra viewport with zero height has sign in view (#9175)
Fix #9147: Crash when taking screenshots (#9169)
Fix #6598: [Network] Prevent crashes when (re)joining network game by falling back to main menu first (#9163)
Fix #9152: Screenshot success popup window was treated as an error (#9159)
Fix: Fast-forward stuttering when vsync is enabled (#9140)
Fix: [Network, Win32] Network errors were handled badly (#9116)

Feature: Toggle to enable/disable vsync (#8997)
Feature: Volume controls in the Game Options window, and better defaults (#8943)
Add: Hotkey to focus object and rail filters (#8908)
Add: Better plural support for Romanian (#8936)
Change: Improve layout and spacing of several windows at different GUI scales (#9041, #9042, #9044, #9050)
Change: [Win32] Use user UI language setting for initial language selection (#8974)
Change: Make effect volume scale more intuitively (#8945, #8950)
Change: Improve padding of Object & Rail station windows (#8929)
Fix #6322: [Script] Crash when script allocates too much memory, now kills script instead (#9047)
Fix #7513: [Script] Crash on garbage collection with misbehaving script (#9040)
Fix #9028: [OpenGL] Crash when changing max sprite zoom level (#9032)
Fix #8874: show a warning when a NewGRF scan is requested multiple times (#9022)
Fix: Desync when GS unlocks railtype with wagon unlock (#9021)

Change: Also make roadside trees match the tree transparency option (#8245)
Fix: Center text and icons in the status bar vertically (#8273)
Fix: [NRT] Set invalid road and tram types for rail tunnel ends (#8269)
Fix #7980: Properly invalidate mouse-over station coverage highlight (#8263)
Fix #8250: [NRT] Company infrastructure window always omits last road/tramtype (#8251)
Fix #8162: [NRT] Improve error message when converting town owned road (#8247)
Fix #8216: Don't show floating text on autoreplace if cost is 0 (#8244)
Fix #8129: Crash if a news message expires while viewing the endgame screen (#8243)
Fix #8221: Use more specific error message when a bridge is too long (#8240)
Fix #8230: Resolve ".." when opening files in .tar (#8231)
Fix: A few race conditions in netcode (#8227, #8228, #8229)
Fix #7838: Crash relating to group creation and renaming (#8223)
Fix #8104: [SDL2] Fix window resizability when going from fullscreen to windowed mode (#8211)

Lots of fixes this time round, notably several stability fixes to multiplayer - lots of possible desync bugs snuck in, hopefully we’ve caught them all now.
As a new “feature”, we’re now providing packages for Ubuntu 20.04 as well.