I write here, but am aware of the link ( Is it possible to get rid of the floating toolbar ) cited above. But as this worked for me (see below) I guess the two problems are not entirely equivalent.
I tried quite a bitof different things to get rid of the redo-undo button, but it is still there. I have a Flask app and dash is served over the Flask server (gunicorn in production). I have tried local and external css. I can confirm that the css is loaded (in the browser console, but also since I changed some styles and see the effect when the dashboard is rendered). Anyhow the undo-redo button is still there (menus get disabled by the very same css and they disappear as expected). When I study the code of the page (css to disable redo-undo is loaded with dcc.Link(…)) I see the css, but the code for the undo-redo button has no hidden style element. May this happen, since the css server by the dcc.Link element is loaded after the undo-redo code is added at the top of the page?
Moreover, when several people use the dashboard (each having a own session, and session-id) excessive use of undo-redo will crash my server (this may a problem of my server software, but I could not yet locate any).
I would appreciate a reliable method to get rid of this functionality which I will certainly not need.
BF.
PS: My experience with dash is overall very good.