No preview when merging videos

[realyn]

When I use the video combine node, I can't see the preview below the node after running it. I have set the preview method to Latent2RGB in the settings of the comfyui manager. In the settings, I have turned on advancedpreviews and latentpreview of VHS.
Right-click a node and choose to open the preview in a new window

[realyn]

When I turned off advancedpreviews, the preview of the video combin node appeared。