How to reproduce:
1. Create a new project
2. Install the Addressables package
3. Add the Addressable Groups window to the Editor (File > Asset Management > Addressables > Groups)
4. Create a new Packed Asset (Create > Group > Packed Assets)
5. Rename this new asset to "1.test 1"

Expected result: Gets renamed to "1.test 1"
Actual result: Gets renamed to "1" in the Addressable Asset Group while the asset file itself gets renamed to "1.test 1"

Reproducible with: 2019.3.0b2, 2019.4.4f1, 2020.1.0f1, 2020.2.0a18
Not reproducible with: 2018.4.25f1, 2019.2.21f1

Notes:
-Exact regression versions are missing due to crashes during the project creation process and errors in the Editor that prevent Addressables from working
-When renaming, the last dot gets deleted, all that goes after it also gets deleted ("1.scene 1" -> "1", "545.test 1." -> "545.test 1")
-All further renaming of this asset will continue to be bugged