Reproduction steps:
1. Open the attached “IN-94762.zip” project
2. Open the “SampleScene”
3. Select the “GameObject” from the Hierarchy
4. Observe the Console
5. In the Inspector, find the “Addresable Sprite Atlas Variant Loader” Script Component
6. In the Sprite property, click on the Object Picker next to the ‘<none>’ reference
7. Select any available image Sprite
8. Observe the Console

Expected result: No errors and the Sprite is selected
Actual result: Reference remains to ‘<none>’ and “Count mismatch between packables (0) and sprites in Atlas (2).”, “Unable to set all of the objects selected subassets” errors

Reproducible with: 2.0.3 (6000.0.39f1, 6000.1.0b7, 6000.2.0a4), 2.3.16 (6000.0.39f1, 6000.1.0b7, 6000.2.0a4)
Not reproducible with: 1.21.12 (2022.3.58f1), 1.23.1 (2022.3.58f1)

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Note:
- A very similar issue was originally reported here and fixed in the 2.3.7 package version of Addressable: https://issuetracker.unity3d.com/issues/exception-indexoutofrangeexception-is-thrown-when-assigning-an-addressable-spriteatlas-to-an-assetreferencesprite-field. Therefore the error is different from 2.0.3 to 2.3.1 package versions, but the issue remains after fix with different errors