Airbus and Rolls-Royce are investigating two incidents in which A350s experienced uncommanded in-flight engine shutdown after drinks were spilled on controls situated on the cockpit centre pedestal.
https://www.flightglobal.com/safety/a350-engine-shutdown-incidents-linked-to-cockpit-drink-spills/136434.article [flightglobal.com]
Apparently, waterprofing keys is against the spirit of Airbus engineering as membranes cost way too much.