Hi — yes, this is a known SharePoint-Lists customized-form rendering
issue, not something unique to your form. Lots of people hit it. The
short version: your form is taller than the SharePoint side-panel
viewport, so when you focus a date picker the panel auto-scrolls to
the field and pushes your top buttons above the visible area. "New
item" mode triggers it more than Edit because the form starts taller.
Step 1 — Fix the form's Height property.
Open the form in Power Apps Studio → select the screen → check the
Height property. If it's set to a hard-coded number (e.g. 1136),
change it to:
App.Height
This lets SharePoint resize the form to match the panel and stops
the internal scroll from running.
Step 2 — Move the top buttons as high as possible.
You mentioned moving them further DOWN — try the opposite. Set the
Y position of your top tabs / Save / Cancel container to 0 or 5.
Less form above them = less to scroll past.
Step 3 — Check the SharePointIntegration control's OnNew.
On your form, find the SharePointIntegration control → look at the
OnNew property. If you have anything heavy in there (long Collect,
slow Lookup, ResetForm + SetFocus combos), it can trigger a layout
shift right after the form opens. Trim OnNew to the absolute minimum.
Step 4 — Clear browser cache.
Recent Power Apps platform updates sometimes leave a stale form
bundle cached. Ctrl + Shift + Delete → clear cached files → reopen
the list → try a new item.
Step 5 — Try a different browser.
Some SharePoint side-panel rendering quirks are browser-specific.
Worth a 30-second test in Edge vs Chrome.
If none of those work, raise a Microsoft support ticket with a video —
Microsoft has acknowledged similar SharePoint-form rendering issues
in past maintenance releases.
Hope one of those resolves it.
