Once you find Quick Access not working normally as it should, try to disable and then re-enable it. Or else, manually delete some related %appdata% files.
You should ask File Explorer to open files or folders to This PC instead of Quick Access.
Launch File Explorer, click on View > Options > Change folder and search options. Now you opened Folder Options.
Uncheck the two options “Show recently used files in Quick Access” and “Show frequently used folders in Quick Access” under Privacy. Click “Clear” to clear File Explorer history. Click OK.