You mention using the default theme, but nothing about being in Restricted mode (community plugins disabled) or disabling all CSS snippets (if you have any).
I can’t reproduce this in the v1.9.4 Sandbox vault.
You mention using the default theme, but nothing about being in Restricted mode (community plugins disabled) or disabling all CSS snippets (if you have any).
I can’t reproduce this in the v1.9.4 Sandbox vault.