Quick note save button is not working properly in landscape mode

Expected behavior

As app keeps the save button disabled if i didn't write anything in quick note yet, so when i write some text in my quick note then the save button needs to be enable so that i can save my quick note.

Actual behavior

When i run app in landscape mode and go to quick note section to write a note. As my note is empty yet so the save button is disabled which is fine but after writing one line, the save button is still disabled. I wait for around 5 minutes but the button didn't enable. But if i go to another tab and came back to quick note tab then the button enables(for better understanding please see recording of bug).

How to reproduce

To reproduce the bug follow the following steps :-

• Open the app and rotate your screen to landscape mode.
• Now go to quick note tab to write a note. As you go you see the save button at top bar is in disabled condition now.
• Write a word or line and the button is still disabled.
• Now switch to any other tab and came back to quick note tab again and you see now the save button is disabled.

* Device:  Samsung J7 Prime
* Operating system: Android 7.0 Nougatt
* App Version: v0.3.4

Recording Of The Bug