8 Eight Hitpoint bars Ogryn BUG

When equipping 3 +1 toughness buffs to an Ogryn and getting 300HP or greater with 8 Health Pips/Segments/bars the bar will disappear.
To track your HP you will need to check the numbers, as the graphic method will fail.

Does the UI have a limited interface or is it unintended for operatives to have over 7 health segments?