@GDS_User01
Based on your description, I understand that your SharePoint Online both have workflows and flows to trigger changes. Workflows trigger changes as expected, but flows do not trigger changes. SharePoint designer will not block flows.
Please check following tips.
1.Check whether you create an automated flow to trigger changes.
2.Check the flow run history to see if there are any errors.
If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.