Version 7 Editor Bug
I've encountered a strange bug in the LINQPad 7 file editor (haven't checked other versions).
I'm currently using version 7.6.6.
It happens when you open a file that contains a collapsed #region. If you expand the region and then start to type, it suddenly collapses. The first character you typed appears where the cursor was, but any subsequent characters are at the start of the region.
This only happens the first time you open and expand - afterwards you can expand the region and type away quite happily. But it seems to also happen for similar files opened in the same session.
Thanks - this will be fixed in the next update.