Connector title disappears when (re-)opening a cluster

[odungern]

affected: vis-network.min.js (4.21.0),
not affected: vis-network.min.js (4.20.1)

Please see the series of screenshots. So far, we haven't created an isolated code snippet provoking the error - because you might have a suspiction knowing what has been changed from 4.20.1 to 4.21.0. But we could invest some time, if you have no idea and cannot reproduce it with your testcases.

[csvance]

Also have the problem in 4.21.0 (in both Chrome and Safari). Downgrading to 4.20.1 works around this for me as well.

[RomanDvorsky]

Same for me just a little detail in my case. If I close and open the cluster all is fine till I move the node or edge - only after the node is moved the labels are gone..