Currently user needs to dive into
Settings --> Appearance --> Set Standard / Wide view
to change from standard to wide chat layout.
Add a quick layout toggle button directly in the primary UI layer (e.g. upper right corner, besides temporary toggle).
Why this is needed:
Based on topic and lenght of an answer, either wide or standard chat layout is more beneficial.
Example:
Normal everyday chat might prefer standard layout to read quickly through response.
In depth comparison with a wide table included displays better in wide mode.
A quick toggle would make switching much easier in everyday buisness.