Bugged 'Define' - on android only [?]

[chromos]

Let's assume this defined function:

   

It works as expected:

   

But if you make one of the next steps (and it doesn't matter if you first switch calculator off by [Shift]+[On] or not):

• tapping on triangle system button on phone;
• tapping on circle system button and then wipe HP Prime from running apps (square system button);
  

... and if you launch the HP Prime then defined function no longer works:

   

It's because variable became unchecked:

   


I'm running version 11586 from 2017-04-20 on Nexus 6: