UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/68.0.3440.17 Chrome/68.0.3440.17 Safari/537.36

Steps to reproduce the problem:
1. Select any language to be used for spell checking
2. "Spell check dictionary download failed.
Please check with your network administrator to make sure that the firewall is not blocking downloads from Google servers."

What is the expected behavior?
I am able to download/ use already downloaded spellcheck libraries.

What went wrong?
Whenever I try to designate a language for spell check, I get the error "Spell check dictionary download failed.
Please check with your network administrator to make sure that the firewall is not blocking downloads from Google servers."; even if the current .bdic file already exists in ~/.config/chromium/Dictionaries .
Moreover, not only don't I block access to google on my networl, chromium doesn't even try to download anything, as both according to its internal dev tools as well as wireshark it doesn't even open any connections when hitting "Retry".

Did this work before? N/A 

Chrome version: 68.0.3440.17  Channel: stable
OS Version: 4.8.0-53-generic
Flash Version: -

The same does not hold true vor the google-branded version (`google-chrome`) of the browser, but copying en-US-7-1.bdic from that directory doesn't change anything (it shouldn't - the one already present is identical).