Currently, if you append or prepend an input, you lose the rounded border on the right side of the "input-group" if there is an error message shown for the field.
Bootstrap requires an extra class "has-validation" on the "input-group"-div to avoid this issue:
To fix issues with border radius, input groups require an additional .has-validation class.
https://getbootstrap.com/docs/5.3/forms/validation/#server-side
It could easily be added in BootstrapForm::Helpers::Bootstrap#prepend_and_append_input.
Currently, if you append or prepend an input, you lose the rounded border on the right side of the "input-group" if there is an error message shown for the field.
Bootstrap requires an extra class "has-validation" on the "input-group"-div to avoid this issue:
https://getbootstrap.com/docs/5.3/forms/validation/#server-side
It could easily be added in
BootstrapForm::Helpers::Bootstrap#prepend_and_append_input.