Created attachment 218487 [details] Screenshot 1. with a few extensions installed 2. chrome://extensions/ 3. developer mode 4. click Update – the 'Updating…' status appears, does not disappear.
Worked around by manually identifying then removing a number of extensions that are no longer in Google's store. I guess I'll find an upstream bug for this …
Chromium bug 1121468 - Extensions page: "Updating…" in Developer Mode stays forever <https://bugs.chromium.org/p/chromium/issues/detail?id=1121468>