Start workflow from a calculated column JavaScript button

Nitzan Goodman : You many get the good response from the Forms/xyx.aspx , because it will load receptive library/list actions.
If you go for SitePages/Pages , it having the own js file their action, so you wont get the full functionality as expected in the original list.

Suggestion is you may validate the action by give some test output after each action in the js button. Otherwise you turn on the developer tool what happen while click the button. Definitively the js will through some error in background. Check the error and try to fix it.