The module is already ported to Backdrop and is also used in backdropcms.org (to provide the special <nolink> path required for the "About Backdrop", "User Guide", "Developer Guide" and "Themer Guide" menu items of the Handbook menu).
This can be considered a sibling issue to #422 and is a sub-issue of #1839
GitHub Issue #:
1840
Recent comments
Wow, many thanks for keeping on digging. You finally found it! Yes, now I can reproduce the problem, as soon as I switch to "Use map defined setting" in the view's zoom setting section...
Disappearing administration bar. Is this a Leaflet or a Backdrop bug?
Thank you for these clarifications. In a few days I'll tell you more...
Create a new theme - Starter theme
I did a bit more testing again using a new content type. It seems the problem with no sane default map zoom level is with all the maps from Leaflet More Maps (I did not try all of them, but...
Disappearing administration bar. Is this a Leaflet or a Backdrop bug?