[DevExpress Support Team: CLONED FROM T298420: The vertical separator is unexpectedly shown in certain cases]
Unfortunately, it seems this is still an issue - apologies for making you think this was solved! It seems my previous test project didn't quite get to the root of the issue, so I've attached a new one for you to look at. If you click the default button, the treelist is fine. However, clicking on Banded shows the strange lines, which persist when you return to default. Note that this only seems to happen with a fixed left column .
Any ideas?
Cheers,
Karli
Hi Karli,
Thank you for your sample project. I have reproduced the issue and passed this ticket to our developers for further research. We will update this thread as soon as we make any progress.
Thanks,
Alexander