Modifier Button Issue

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Hi

I have weird problem discovered today (not sure if it's related to 1.5.4 or not, however wasn't available before the update).

 

Problem is my modifier button for A10C acting very strange, as every time i join the game it works fine, then after almost a min it stops working.

 

I thought this an stick issue, however i tested the button and it works perfectly, also i changed the button to different one and still same problem.

Also used another profile i am using in Nevada and still same issue.

Plus cleared the profile and re-added it and still same issue

So, i repaired the game and still the same.

 

However when i fly in Nevada there is no problems at all and A10C profile works perfectly, so anyone can advice?

 

Note: i am using direct input to the game not the stick profile editor.

Stick type: X55 and X52