Hi Alex,
Greetings from Syncfusion support.
We have validated the reported issue by preparing a similar
sample in the latest version. But we are unable to face the re-rendering issue
in the pivot table component while performing open/close in the Sidebar
component, and the sample works fine from our side. Also, we have checked the
re-rendering issue by using Date Time values in the pivot data source.
Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/WebApplication1-2031195404.zip
Check out the attached sample for your reference. If the
issue still persists from your side or if we misunderstood, share some
additional details related to the reported issue, or if possible, replicate the
issue in the shared sample. Also, share the Syncfusion package version that is
used on your side. This will allow us to further investigate the issue.