upfront - spirit page heading was not auto responsive


while testing spirit theme, i create new page and after adding video block.

when i got into responsive mode with mobile, then video s thumbnails shows
goes down as responsive, but page title was not that was out of screen,'
when i clicked on setting then there was already set auto size and container 100%

but i was not able to resize .. this is wp basic title and you are adding dynamically
why is that issue and how to resolve ....?