@Tollefson, Kevin & @MayankBargali-MSFT A bit late to the discussion, but I recently encountered a very similar issue and wanted to share a possible explanation and workaround.
I have a Power Automate flow that uploads files to a SharePoint document library on a daily basis. The upload itself continued to work as expected. However, another part of the solution relied on “Get files (properties only)” with “Limit entries to folder” enabled.
From one day to the next, this action started returning no results, even though the target folder clearly contained files and no changes had been made to the flow. When I enabled pagination, the action began returning partial results, but still not the complete set of files.
This behavior led me to suspect a limitation related to the size of the document library. After further investigation, it turned out that the library had crossed the 5,000-item threshold, which can cause inconsistent results when listing files using the SharePoint connector.
As a workaround, I replaced the connector action with “Send an HTTP request to SharePoint” and queried the folder contents directly using the SharePoint REST API:
Method: GET
_api/web/GetFolderByServerRelativeUrl(
'/sites/<SITE_NAME>/<DOCUMENT_LIBRARY>/<FOLDER_PATH>'
)/Files?$select=Name,ServerRelativeUrl,TimeLastModified,Length
This approach reliably returns the complete list of files in the specified folder and avoids the issues observed with Get files (properties only) in large document libraries.
Hopefully this helps anyone running into similar behavior when working with SharePoint and Power Automate.