The edition dropzones for the bottom of the main content and the top of
the footer content are at the exact same locations.
Until commit https://github.com/odoo/odoo/commit/514722d783d504151b6b835375de036eda88279f,
when trying to drop a snippet there, there were two cases:
- The user drops a snippet above/below the location -> the snippet
is added to the main content (as the code searches for the nearest
dropzone, and always return the first one in the DOM if several are
found).
- The user drops a snippet around the location, seeing a snippet preview
-> the snippet is added to the footer content
With the mentioned commit, the second case changed: the snippet is now
also dropped in the main content. While this is more logic, there is
no way to drop a snippet in the footer anymore. Adding a border on top
of the footer content solves the problem for now (as the dropzone will
now be at 1px different location).
qsm-odoo
5c9e3e0060