Is this a bug????

On the main site there is a column of topics on the left side of the page.

When I click on "waxing" I get information on waxing.

When I click on "sugaring" I get the same page of information on waxing.

Does this mean sugaring and waxing are identical????? Or is there a bug in the web site?

no bug.
Waxing and Sugaring are both the process of hair removal by smearing something that will stick to the hair, and ripping the hair out from the roots in quick fashion.

The only real difference is that sugaring usually does not involve the possibility of heat damage that comes with waxing.