[DevExpress Support Team: CLONED FROM T312273: NavigationPane collapses when current page is re-selected]
NavigationPane - NullReferenceException is thrown when clicking a navigation tab header twice and setting the State property in the NavigationPane.StateChanged event handler
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.
- v15.2.4Download Official Update
- v15.1.9Download Official Update