How to reproduce:

1. Open a new project
2. Import a plugin
3. Select the plugin and try any of these steps in any of the text boxes in the Import Settings:
3.a. Type something - the cursor will move forward, but nothing is actually being typed
3.b. Right-click in the text box - it behaves like a left-click and no context menu pops up
3.c. Select and Ctrl+C copy some text in the text box - the text is not copied
3.d. Ctrl + A to select the entire line - nothing is selected
3.e. Reduce the Inspector window width - the text is truncated, but using the mouse or the arrow keys to scroll the cursor forward does not reveal the text that is hidden