When using the File Upload field, if you chose to allow multi file upload (which i do so that I can style the button properly) and set max files to 1, users are met with a validation error message that says ‘Maximum number of files reached’ when they load the first file up.
This is quite confusing for users as it looks like it is preventing them from uploading a file, even though the file did upload.
This validation message should really be displayed only when a user tries to upload a subsequent file.
It looks broken to be shown a red error message when you upload your first file of one files.
There is no filter for this message, it is an array of strings output by a localisation script, so it is not even possible to change the wording to something that sounds less broken.
Hiding the error message is not really appropriate because it is also used for other validation messages.