Test of bad or empty children inside of content tags that with conditions
<math xmlns="http://www.w3.org/1998/Math/MathML"> <mtable> <mtr> <mtd> <apply> <int/> <bvar/> <condition/> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <int/> <bvar/> <condition> <apply/> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <int/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <apply/> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <int/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition/> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <int/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <reln/> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <int/> <bvar> <ci>2</ci> </bvar> <condition> <apply> <ci>x</ci> </apply> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <diff/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <apply> <gt/> <cn>2</cn> <cn>5</cn> </apply> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <divide/> <cn>2</cn> <ci>x</ci> <ci>y</ci> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <exp/> <cn>2</cn> <ci>x</ci> <ci>y</ci> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <limit/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <apply> <gt/> <cn>2</cn> <cn>5</cn> </apply> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <log/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <apply> <gt/> <cn>2</cn> <cn>5</cn> </apply> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <moment/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <apply> <gt/> <cn>2</cn> <cn>5</cn> </apply> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <quotient/> <bvar> <degree> <ci>2</ci> </degree> </bvar> <condition> <apply> <gt/> <cn>2</cn> <cn>5</cn> </apply> </condition> <apply/> </apply> </mtd> </mtr> <mtr> <mtd> <apply> <times/> <ci>2</ci> <ci>5</ci> </apply> <apply> <times/> <ci>2</ci> <apply> <ci>5</ci> </apply> </apply> </mtd> </mtr> </mtable> </math>