Turn off automatic click-to-copy behavior for output cells in notebooks deployed to the Wolfram Cloud.

By default, the ClickToCopyEnabled option is set to Automatic for all output cells in notebooks deployed to the Wolfram Cloud:

Use SetOptions to disable click-to-copy behavior for the notebook, then redeploy:

Notes

You can set ClickToCopyEnabled for either the entire notebook or individual cells.
ClickToCopyEnabled -> Automatic uses certain heuristics to decide whether click-to-copy should be enabled.
This workflow is for the Wolfram Cloud platform only.