Update in reactive vars do NOT cause expected re-renders in 3.3.7 (regression)

[delyanr]

Intended outcome:
Updates to reactive vars in one component should trigger re-renders across all other components that are listening to the said reactive vars. I've tested this using useReactiveVar - not sure if the issue also occurs when using useQuery with the @client directive.

Actual outcome:
Other components are not being re-rendered, and thus are using stale data.

How to reproduce the issue:
This could be related to #7593, although the issue described here occurs only in the latest v3.3.7. (So it's a regression!)

Please use the following link for reproduction: codesandbox

Refresh the page and see that the two components show different data for the reactive variable. One of the components triggers an update to the reactive var via useEffect, which in turn does not cause a re-render to the other component.

Change the apollo-client version back to 3.3.6, and see that this no longer happens.

Versions
React: v16.14.0 - v17.0.1
Apollo-client: v3.3.7

[benjamn]

@delyanr Thanks to your reproduction, I can confirm that this is fixed in @apollo/client@3.3.8 (just published).