Official documentation guide
Why does Mac Dictation insert text in the wrong application?
Question: Why does Mac Dictation insert text in the wrong application?
Short answer
Dictation inserts at the current insertion point. Put focus in the intended editable field before starting Dictation, then confirm the configured shortcut in that same app.
What the official documentation establishes
Dictation works at the insertion point in an editable document or text field.
The configured shortcut starts Dictation but does not choose the destination field.
Changing application focus can therefore change where dictated text appears.
Scope and limits
This page compares current first-party documentation. It is not a hands-on test of a particular computer, microphone, pedal, browser, or application version. Product behavior can change with software, permissions, focus, language, and device configuration.
Primary sources
Related: Can Mac Dictation run while Voice Control is turned on?