In this screen recording, I’m demonstrating an issue with the Polaris table component.
When a Polaris table is placed inside a modal, the table’s header and leftmost column lose their sticky behavior — they scroll out of the viewport instead of remaining fixed.
Interestingly, resizing the browser window temporarily resolves the issue and restores the sticky positioning for both the header and the first column.
However, this issue doesn’t persist when the table is outside of a modal.
You can see the video demonstrating here - Polaris Table Inside a Modal Issue
I’ve tried wrapping the table in additional <div> elements and applying custom classes, but that hasn’t solved the problem yet.