Opening Prime Number after Catalan Number does not change the content

[espoem]

Expected behaviour

There is a group of tabs in the navigation sidebar (Catalan Number, Prime Number, Divisors, Fibonnaci Number). Switching from one tab to another should be doable without any issue.

Actual behaviour

The attempt of switching from one to another in the named group fails as the content does not change. Another tab of the group can be opened only if the app is closed and opened again.

Steps to reproduce

1. Select Prime Number from the navigation sidebar
2. Select Catalan Number
3. The content does not change, the Prime Number is selected and shown

You can repeat the steps with any of the tabs from the group listed above.

• Android 7.1.1
• version 3.4.0

[axkr]

Can confirm this bug n version 3.4.1