we have a previous (to the current new activity) hebrew label resource
while adding a new resource (or activity) after that hebrew label resource
i get a very very long line of the Activity Completion Condition listbox with that hebrew
label resource converted to hex (%1D%45%21%A4....) which distorts the page view.

for now, i change moodle/course/moodleform_mod.php line 422 to :
$completionoptions[$id]=substr($cm->name,0,60);

just to make it workable for our development/testing needs.
i am attaching a snapshot (after the trim)

writing English in label resources does not have this effect.
it happens only in label resources.