Starting today, I've been unable to get grains running Etherpad to load properly. I am using Etherpad app version 1.8.14-2. (However, I will note that grains that have been shared with me using an older, pre-FundOSS Etherpad version continue to work.) Other apps seem to be working still (at least the ones I've tried so far, including EtherCalc).

Specifically, when I open an Etherpad grain (or when anyone I've shared the grain with opens it), I see an error, such as

An error occurred while loading the pad
SyntaxError:literal not terminated before end of script in
https://ui026adf21285f40fbd605f4ada00334b6.garrison.sandcats.io/javascripts/lib/ep_etherpad-lite/static/js/ace2_common.js?callback=require.define&v=e34d6eef at line 6387

There might be slight variations on this. For instance, I might reload and see

An error occurred while loading the pad
ReferenceError:jQuery is not defined in
https://ui27245dbb54bd9b17f5ac63442b0ebc8e.garrison.sandcats.io/static/plugins/ep_comments_page/static/js/jquery.tmpl.min.js at line 1

This happens with both existing grains and newly created grains.

When I search the internet for this error, this is the only thing that comes up: https://wiki.documentfoundation.org/Website/Etherpad#Weird_errors_when_connecting.3F. However, it seems to happen regardless of browser and regardless of browser extensions installed.

I have no idea whether Sandstorm itself is the problem, but it is the only thing I can think of. Sandstorm has more or less always "just worked" for me, so it is very odd to see something break. I find it interesting that the timing seems to match when my server upgraded to 0.304, for which the release notes say

Cap'n Proto has had several internal optimizations. We don't expect a significant impact on Sandstorm but let us know if there's any fishy behavior changes.

I'm not certain it's related, but this behavior is certainly fishy.

I haven't tried reproducing on a development Sandstorm server but plan to try when I get a chance.