Undo Buffer Issue

I have the Thunder Beta installed as a standalone installation. I have also found this bug with Thunder installed as a plugin to Eclipse

Since using Thunder, I have noticed that my undo buffer is not working correctly.

I get around 25-30 undos before Eclipse will no longer undo anything further.

The undo history size setting defaults to something like 200 and I have tried upping it to 1000 to see if it helped.

It doesn't seem to matter what I do, but I can only undo 25 or so actions before I can not undo anything.

This happens with imported projects as well as new ones. Existing cfml/cfc files as well as newly created ones.