Sorry to hear this. I have an 880 for years and 866 for a few months, none of them clicks when charging. It sure had to be an issue with some series of specific models. Some people got replacements which behaved normally, unfortunately that wasn’t the case with yours.
If you’re considering an upgrade, check for 960 or 980 (981 on
Amazon). Haven’t heard those had issues. 960 is roughly the same price as 875, at least in Europe.