If a user changes their language in Salesforce to something other than english, this changes native SF text and labels. Would an Apsona button also change?

No, Apsona buttons and custom UI elements will not automatically change when a Salesforce user changes their language.They do not follow Salesforce native language settings. To localize Apsona content (like button labels), you need to manually configure translations using Salesforce's Translation Workbench or custom JavaScript/VF overrides if you're embedding Apsona in buttons or components.

Explanation:

What Changes with Salesforce Language Settings:
When a user changes their language in Salesforce (e.g., from English to French), native Salesforce UI elements like:
Standard tabs
Standard field labels
System messages
are automatically translated (if translations are available).

What Doesn’t Change Automatically:
Custom button labels
Visualforce page content
Apsona UI or custom actions (buttons, templates, dropdowns inside Apsona)
JavaScript buttons or custom links
Video Link = https://drive.google.com/file/d/1z7kcz-QS_qxNWxjAzRyBWBSzTuHbwoYD/view
shows List view btn merge and Detail page btn merge both are showing in English language
The SF language was changed from English to German