Hi Zeev,
We are glad to announce that our weekly release (V28.1.38) has been rolled out successfully. The fix for the issue has been included in our weekly release(28.1.38). Upgrade to the latest version to resolve the issue.
Release notes: https://ej2.syncfusion.com/angular/documentation/release-notes/28.1.38?type=all#popup
Feedback: Scheduler quick info popup not rendered properly in RTL mode in React | Feedback Portal
Sample: Uvis9qp1 (forked) - StackBlitz
Root Cause: When the popup is opened in the bottom right corner, we initially set OffsetX to zero, which caused the popup to be misaligned.
We thank you for your support and appreciate your patience in waiting for this release. Please get in touch with us if you would require any further assistance.
Swathi