"InvalidOperationException" error is thrown when creating the Content Directory in the Addressables Groups window

How to reproduce:
1. Create a new Unity project and install the Addressables package
2. Go to Window -> Asset Management -> Addressables -> Groups
3. Right-click -> Create new Group -> Content Directory
4. Observe the Console

Expected results: No errors are thrown
Actual results: "InvalidOperationException: Collection was modified; enumeration operation may not execute." error is thrown

Reproducible with: 3.1.0 (6000.7.0a2)

Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested

Note: Reproduced only once

First lines of error:

InvalidOperationException: Collection was modified; enumeration operation may not execute.
System.Collections.Generic.List`1+Enumerator[T].MoveNextRare () (at <5eb7bdeb22ec4697898c415b9e10700c>:0)
System.Collections.Generic.List`1+Enumerator[T].MoveNext () (at <5eb7bdeb22ec4697898c415b9e10700c>:0)