I would try updating with the UpgradeMODX extra.
The problem showed up most likely to change the Protocol of the style path. "broken on site" when viewing the HTML code, the Protocol address changed from http to https.
In the settings:
server_protocol = http.
Manually update the cache helps to solve the problem.
What are the Protocol settings?
Is there a rule in .htaccess that's changing http to https?
discuss.answer
I think I know what it is. Make sure you have this (with the exclamation point) in the head section of all templates.
<base href="[[!++site_url]]" />
Some pages are probably using the old protocol from the cache.
Also, manually delete all files in the core/cache directory.