Blender 4.5.12 LTS features important bug fixes. It is released on the v4.5 - Stable - LTS branch. You can switch to this by right-clicking on the Blender entry in your library, select Properties.... Open the Betas tab and select v4.5 - Stable - Stable.
Patch Notes
* VSE: crash when prefetching frames for a scene strip with sequencer input which scene only contains a sound strip. (#160559)
* Assert when undoing Make Single User with a linked mesh. (#161211)
* Fix: crash in Armature Edit mode after duplicating animated bone. (e3d228ac409838aae79559866073e9fa19c2eb83)
* Fix: Invalid ID name uniqueness code handling of ID name removal. (23131d9d2c40cc5cc9114aa49ec9fe087c0a12ee)
* VSE, adding a crossfade between two strips does not set the crossfade inputs based on selection anymore. (#156207)
For a detailed list of bug fixes in each release, see 4.5 LTS releases on blender.org
LTS Program
Learn more about the LTS program on blender.org
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Keep reporting any issues you find to make this LTS the most stable release ever !
Happy blending,
The Blender team