Please see the image to simulate the behavior.
We have closed this ticket because another page addresses its subject:
Drawer - The panel is not shown after it is hiddenASP.NET Project Template - After the page is refreshed when Drawer is closed, Drawer becomes completely hidden
Answers approved by DevExpress Support
Hi Bruno,
This issue has been fixed in the context of the following report: T944835 - Drawer - The panel is not shown after it is hidden. If you need to resolve the issue prior to the official release, I suggest that you request a hotfix build there.
Regards,
Luis
Hi Bruno,
Would you please create a small runnable sample project to show the issue, so I can analyze and debug it on my side? You can use our Project Templates as a starting point. I look forward to your reply.
Here is a sample just created from a template and a video showing the same problem.

Hi Bruno,
Thank you for the GIF. I've passed this case to our developers. We will update this ticket when we have any news.
Regards,
Luis