When setting TabPosition to tpTop or tpLeft on a TdxTabContainerDockSiteTabControl.TabsProperties, the border between the tabs and the content is missing (tested with Seven skin).
With tpBotton and tpRight, it's OK.
Please see printscreen attachment.
No separator is painted between tabs and content in a tab container site whose TabProperties.TabPosition property is set to tpTop or tpLeft
Answers approved by DevExpress Support
We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.
Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.
Hello Joffroy,
Thank you for your report. I have reproduced the described behavior and forwarded this ticket to our developers for research.