I have a number column in a sharepoint list with the following settings in place (see screen shot). I need to only see a whole number but a decimal still displays even though 0 is selected for decimal places. Is it possible to remove the decimal from the number?
Thanks

After my tests, only integers will be displayed after selecting 0 for decimal places.
You can try the following to see if that solves the problem:
You could try to clear browser cache then restart it.
Try to use a different browser or your browser's InPrivate mode to see if the same error occurs.
Whether all SharePoint lists have the same problem? You could create a new number column in another SharePoint list to check.