Hi Simon,
Thank you for the provided feedback.
This looks like an issue on our side. Here I logged a new issue in our GitHub issue tracker:
https://github.com/telerik/kendo-angular/issues/4327
Subscribe to the issue, to be notified in a timely manner when there is any update.
As a token of gratitude for reporting this, I updated your Telerik points.
Please accept our apologies for the caused inconvenience.
As for the panning, when resetting the pannable property value, the Map returns to the center if such was set. In case there is no center set, updating the pannable property wouldn't change the Map view.
Regards,
Martin Bechev
Progress Telerik