I can only assume that you have 2 dimensions in "Columns" section in your Pivot Table.
Judging by "+" or rather "-" icon on one of your columns you probablyhave not checked "Fully Expanded" under "Appearance-->Presentation".
This is the way Qlik Sense automatically presents levels-->Bold indicates that you can expand. Once checked "Always expanded", everything becomes visible, and bold font disappears.
Unfortunately we do not have control over this settings and it comes set like this "out of the box"
hope this helps
cheers Lech When applicable please mark the correct/appropriate replies as "solution" (you can mark up to 3 "solutions". This will help community members and Qlik Employees know which discussions have already been addressed and have a possible known solution. Please LIKE threads if the provided solution is helpful to the problem, but does not necessarily solve the indicated problem.