Expected

I expect that even if the device keyboard is closed, I can select a format toolbar button, refocus on the editor (to open the keyboard), and the text I type will have the formatting I selected.

Observed

If I select a format toolbar button while the device keyboard is closed, when I tap again into the editor (even when I tap in the same place where the cursor was already placed) the format toolbar button is deactivated and the text I type has no formatting.

Reproduced

1. Open the demo app.
2. Remove the demo content.
3. Close the device keyboard. (Note that the cursor remains in the text view.)
4. Tap a format toolbar button (e.g. Bold) to enable it.
5. Tap back into the text view. (The keyboard reappears and the toolbar button is deactivated.)
6. Type text. Result: The text has no formatting.

Tested

Nexus 6P API 23 emulator, Aztec demo app (develop branch)