@mike-jones Yes, you’ll typically see this type of behaviour if there is another style that has higher priority in the sense that yours will be overridden. Using !important will override the higher preference, but should be used sparingly rather than everywhere.
@downpw hi. I noticed this also - not been able to track it via css yet and I’m leaning towards it being controlled via JS. I get the same here but haven’t invested any real time in seeing what causes it.