Running WAVE on Discourse hosted reveals a handful of WCAG accessibility issues.
Posting each in a separate ux thread.
Hopefully these are repeatable using WAVE on your own instance, but if not I can provide details on any of these items.
results from a test thread:
|Guideline|Type of Page/Process|Found by||Notes|Level|
|—|—|—|—|—|—|—|
|Linked image missing alt text|2.4.4 Link Purpose (In Context) ||WAVE||Images that are the only thing within a link must have descriptive alternative text.|A|
|Empty button|1.1.1 Non-text Content ||WAVE||Bell button|A|
|Empty links|2.4.4 Link Purpose (In Context) ||WAVE||post content|A|
|Skipped heading level|1.3.1 Info and Relationships ||WAVE||h4 after h1|A|
|Redundant alt text|1.1.1 Non-text Content ||WAVE||post content|A|
|Redundant title text|||WAVE||post content||