try to import the following
#separator:; #html:false (1st) this is a text; it has a back side (2nd) this is another text without a separator (3rd) text with a; back side
old anki used to warn you about the second note. it used to tell you that it has no separator and therefore it will not import it (unless you tell it to do so)…
new anki just imports it. therefore, you will end up with a note that has no back side
is this a bug? or intended behavior?