I'm running in to an issue with the toggle screen component in flow in my partial sandbox with the Summer '20 preview. I have never had any issues until this preview went in to effect.

I have a screen flow that uses the toggle component on a screen element, which allows users to bypass a portion of the flow. The value of the toggle is used by a decision element. 

When running the flow from the user interface (either as an admin or logged in as one of my users), when I flip the toggle to active, the portion of the flow that is supposed to be bypassed when the toggle value = TRUE is not being skipped.

Based on the debug log, no value is being assigned to the toggle component. When I replicate the debug log in production, the following line appears in the log, but not in the sandbox log

13:51:24.0 (62026881)|FLOW_VALUE_ASSIGNMENT|4271ac34584e5c3d58f35fe928c21728f906ad-3302|toggle_skip_review.value|true

Then, because no value was set for the toggle, the decision executes the default outcome, which does not bypass any of the flow.

When I debug this flow in Flow Builder in the sandbox, everything works perfectly.

Has anyone else encountered this issue or have any idea what the solution might be?