The REST responses from Blue Ocean don't have any cache control in the header ie:

cache-control:"no-cache, no-store, no-transform

Which causes IE to cache the responses.

ie. This means that IE users will not see newly added pipelines

To reproduce this:

• In IE visit the pipelines view. Close it.
• In a different browser, create a new job that should be visible in the pipelines view
• Open the pipelines view again in IE. The new pipeline won't be visible until the cache is deleted or you open developers tools and disable the it.