i had same issue with world clock i fixed it in following way.
i was using world clock as a default selection on the complication which produced same result as mentioned above the steps complications and others were turning to world clock.
i just changed the default selection to battery and made it available customizable to user. when i did this and then tested complication again on watch it started working fine.
But there is one bug i found which doesnt resolve that is when you are using icon text and title all displayed the HPA icon shows text HPa and icon at same time
EDIT The bug stil) exists it can be reproduced if you select world clock and then switch it off by display to none in complications menu it returns and craps over the other complications selected. The only way to get rid is to put steps as a selection and then after a minute or so change to no display or other exvept world clock