Format of new document error

Bike 1.12 preview (132)

In Settings…->Document->New, if New is set to Plain Text, new documents are often created in Bike format (but, this does not always happen). This issue is not new.

I’m not able to reproduce this. Is it possible to show it happening on a screen recoding? That might allow me to better spot the issue.

Also do you have a extension set in the settings for plain text?