don't leak divs (#4458)
don't leak divs (#4458)


playi/pxt,switch-education/pxt,switch-education/pxt,Microsoft/pxt,Microsoft/pxt,Microsoft/pxt,switchinnovations/pxt,Microsoft/pxt,switchinnovations/pxt,switchinnovations/pxt,playi/pxt,Microsoft/pxt,playi/pxt,switch-education/pxt,playi/pxt,switch-education/pxt,switch-education/pxt,switchinnovations/pxt