Sim Update 3 Beta (1.5.12.0) Release Notes - June 30th, 2025

RELEASE NOTES Sim Update 3 Beta - 1.5.12.0

If you are playing on PC, outdated packages in your community folder may have an unexpected impact on the title’s performance and behavior.
If you suffer from stability issues or long loading times, move your community package(s) to another folder before relaunching the title
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General Bug Fixes

  • Fixed unprotected/unchecked access to LLVG contexts bank (fixes random crashes when reloading XML gauges)

DevMode

Project Editor

  • Fixed handling of Ctrl+click on packages in Project Editor (could trigger crashes with the Package Inspector open)

SDK

  • Fixed block compressed textures, with dimensions which are not multiples of 4, silently failing to load because they do not respect the DirectX spec.
  • Added an error message when trying to load such textures.
  • Building them with the DevMode should already fail in FS2024, but FS2020 packages could be built even with the wrong dimensions.

SimConnect

  • Fixed wrong request array reallocation leading to crashes

JS API

  • Fixed SEARCH_BY_IDENT call not returning all of the expected results.
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For extra clarification: the note above refers to the crash related to using certain third-party add-ons that many of you reported in the 1.5.10.0 test build in this thread:

Thanks,
MSFS Team

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