Message box with just 'E'

[Willow of Oz]

I received the following messagebox:

Got it after doubly clicking a lot in the media library on genres, album artists and track artists.
b116.
Any one?
Should I just bugreport this?

[Todd The Kiwi]

"e x i ok" it's trying to communicate with you man :heart:

[Rex_Mundi_Incarnit]

"e x i ok" it's trying to communicate with you man :heart:

...and fails lol :silly: