How to reproduce:
1. Open the attached "New Unity Project90hh.zip" project and Scenes/SampleScene scene
2. Enter the Play mode
3. In the Game view, select "New Game"
4. In the Projects window, select "NewScript" asset
5. In the Inspector, right-click and select the "Insert" option
6. Double click on the "Generic Text" option
7. Write some text in the newly added field(For example - "Testing")
8. Click the "Apply" button
9. In the Game view, try to interact with buttons

Expected result: Buttons are interactable
Actual result: Buttons are not interactable

Reproducible with: 2020.2.0a17, 2020.2.0b5
Not reproducible with: 2019.4.11f1, 2020.1.7f1
Could not test with: 2020.2.0a1, 2020.2.0a16(too many errors)

Note: Buttons become interactable after changing the Game view Aspect dropdown (e.g. enable v-Sync option)