As it seems to have something to do with logging in and sessions perhaps @Anomie might be able to spot something in the logs.
I have added some lines to the graph on grafana representing these limits.
Tue, Apr 17
So the script already exists as part of mediawiki.
and connect to OAuth in Wikibase bundle
Is OAuth 100% required for Quickstatements? :)
We can stop using maven by using T192020
Mon, Apr 16
On http://mwfileimport.wmflabs.org/wiki/index.php/Special:ImportFile for me using Chrome Version 65.0.3325.181 (Official Build) (64-bit) The field is not clickable or editable.
Interesting, it looks like this is due to having a lower case first character.
It is not editable for me while using chrome on https://test.wikimedia.beta.wmflabs.org/wiki/Special:ImportFile
I guess you mean on Special:ImportFile ?
Works for me on https://test.wikimedia.beta.wmflabs.org/wiki/Special:ImportFile
This is the story (no tasks to pick up)....
It might make sense for EntityDocument to have a clear() method in the interface.