Slicer values not passed as bind parameter values when using Power BI template (New Issue 2025)

Hi,Slider141 .I am glad to help you.
By slicer visual parameters, do you mean field parameters?
Use report readers to change visuals (preview) - Power BI | Microsoft Learn

Please make sure that the slicer is set to interact with all relevant visual objects.
If my understanding is correct, could you please try deleting the originally created parameter and recreating the field parameter to see if that solves the problem.
If the problem persists after trying these actions, please contact Microsoft Support and provide more detailed error information (including screenshots that do not contain sensitive data, etc.) to check if this is indeed an issue, thank you for your support.
URL:

Microsoft Fabric Support and Status | Microsoft Fabric

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Carson Jian