You found a bug! We've classified it as
a bug in our system.
We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
Version(s) of Ext GWT
Ext GWT 3.0 Release Candidate 2
Browser versions and OS (and desktop environment, if applicable)
IE 9 Windows 7
A normal grid widget contains the "text-overflow: ellipsis" css attribute, so when a text doesn't completely fit into a cell, it's ended with 3 dots "...". That's a nice feature, but unfortunately a TreeGrid doesn't share this beheviour. Because of the column lines bug the lines just get mixed when the text is too long and there is no way to indicate a separation.
http://staging.sencha.com:8080/examp...:basictreegrid -> resize the columns
Thanks for bringing this up. I'll file this against the team and have them take a closer look. Hopefully, there isn't any difference that would prevent this from working equally well for TreeGrids.