Bleeding the elixirs just now and a seal seems to have gone in the lever – drawing air continuously into the syringe at that end, (caliper is closed off and in good order).
Anyone know what is likely to have failed here and whether it is replaceable?
Brake works ok, not obviously leaking fluid, but I guess one of the seals must be on the way out.

The full lever is serviceable – I’ve got the same on mine and suspect it’s the bladder at the lever. I need to bleed mine every fortnight or so, otherwise I need to pump the lever repeatedly to get the brakes to work.

Crap brakes.