I just found a deprecation notice in the developer console of my browser:
deprecation-identify-source.js:15 DEPRECATION: [PLUGIN discourse-topic-trade-buttons] The
modelproperty path was used in thediscourse/plugins/discourse-topic-trade-buttons/discourse/templates/connectors/topic-above-post-stream/trade-buttons.hbstemplate without usingthis. This fallback behavior has been deprecated, all properties must be looked up onthiswhen used in the template: {{this.model}} [deprecation id: ember-this-fallback.this-property-fallback] This will be removed in ember-this-fallback n/a. See Resolving the `this-property-fallback` deprecation for more details.
Just wanted to bring this to attention - although I cannot fix it myself. 