For a description of the problem, see thread at https://bugs.chromium.org/p/chromium/issues/detail?id=467296#c23.

Something on gio's machine is eating up all the pasteboard space [e.g. leaking pasteboards], which prevents the pgp service from functioning [integration requires pasteboard space]. Very suspiciously, in c#23, it looks like Chrome is trying to create a new pasteboard every 4 seconds. That being said, we haven't heard of anyone else with this problem in quite some time, so this makes me suspect some type of third-party content at play [e.g. extension, plugin, w/e]. 

gio, two questions:
1) If you use Chrome by itself [on a machine where you've never launched GPG Suite] and browser for a couple of minutes, do some copy pasting, do you get this pboard error in the logs? If not, we know that the problem lies at the intersection of GPG Suite and Chrome. 

2) If you use GPG Suites with Chrome Canary, do you still get this problem? [Chrome Canary will use a different Chrome profile, so it will lose all the extensions, plugins, etc.]