How to reproduce:
1. Open the user's attached project "AddressableTest-2021.zip"
2. In the Project window go to Assets/Scenes/Test.unity
3. Enter Play mode
4. Observe the blue cube in the Game view
5. Go to the project's "AddressableTest-2021.zip" folder and copy (overwrite) all files from "ServerData-Updated\\red" to "ServerData\\StandaloneWindows64"
6. Go back to Unity Editor
7. In the Game view click "Check and Reload"

Expected result: The scene updates and a red cube appears
Actual result: Editor crash

Reproducible with: 1.16.10 (2019.4.22f1), 1.16.16, 1.17.5-preview (2020.2.7f1, 2020.3.1f1, 2021.1.0b12, 2021.2.0a9)
Could not test with: 2018.4.32f1 (Due to Addressables script errors)

Notes:
-The copying of the files from "ServerData-Updated\\red" to "ServerData\\StandaloneWindows64" is needed for simulating runtime Addressable update
-When opening the project after the crash, the red cube appears(Expected result)
-The crash would occur as well if the files will be copied from "ServerData-Updated\\blue" to "ServerData\\StandaloneWindows64"
-Copying the files from "ServerData\\StandaloneWindows64" to "ServerData-Updated\\red" or "ServerData-Updated\\blue" will not result in a crash

First lines of stack trace:
0x00007FF7FAD9FB3F (Unity) DebugStringToFilePostprocessedStacktrace
0x00007FF7FAD9F51B (Unity) DebugStringToFile
0x00007FF7F9B94FC1 (Unity) CachedReader::OutOfBoundsError
0x00007FF7F9B95493 (Unity) CachedReader::Read
0x00007FF7F87B55E0 (Unity) StreamedBinaryRead::TransferTypelessData