Time Field Inserting a Blank Space

I'm sorry we inadvertently broke something in the new release.

Updated the module from 7.x-2.13 to 7.x-2.14 yesterday and came across this issue. I suspect it due to patch in https://www.drupal.org/node/3204114. When I remove the new line added by the patch the date field works - no validation error.

I don't have much knowledge on the history of this module but it appears based on the comments in issue 3204114 the fix may have been to remove $settings['ampmPrefix'] = ' '; from:

if (strpos($element['#date_format'], 'A') !== FALSE) {
  // Then we are using uppercase am/pm.
  $options = date_ampm_options(FALSE, TRUE);
  $settings['ampmNames'] = array($options['am'], $options['pm']);
  $settings['ampmPrefix'] = ' ';
}

Please note the uppercase "A" in the strpos() test. However, I don't know what regressions may be caused by removing that setting. It looks like that was added back in 7.x-2.11-rc1 (see https://www.drupal.org/node/2359653).

For what it's worth, if you can't or don't want to patch the module yourself, a possible quick "fix" to get around this issue may be to configure the Date Popup module (Administration » Configuration » Date API) to use "Manual time entry, no jQuery timepicker". Disabling the jQuery timepicker turns the input field to a regular textfield. Unfortunately, now it's on the user to make sure they format the time correctly. But it's a quick work-around to avoid issues with administrators editing content and receiving an error about the format of a once valid date that cannot be corrected until a new release is available to address this issue.

Thank you Ne Sar for the post (glad it wasn't just me) and thank you DamienMcKenna!

Temporary patch to remove prefix as per #3 attached.

I'm not seeing this with PHP 8.1, Drupal 7.94, Date 7.x-2.14. Could it somehow be related to the PHP version?

It might be worth adding a widget setting to control this.

I ran into this. Clicking the time field input adds a space before am/pm. if the "accepted format" on the field doesn't have a space, then it will fail.

A workaround:
The accepted format is configurable on the date field under "Date entry options". The default formats in that dropdown do not have a space before am/pm. But you can add your own format options to that dropdown under: /admin/config/regional/date-time/formats. E.g. Add a new format with a space before am/pm "M d, Y - g:i a". Then set this as your "accepted format" on the field.

Workaround in #8 worked for me - thanks!

The patch in #3 and #4 fixed the problem right up. Hopefully the next version can come out soon to save a lot of headaches, esp. for the less techie. Thanks for everyone's work.

Just chiming in. Patch in #5 fixed me right up. Thanks!

Patch in #5 fixed the issue for me too.

Patch #5 fixed it for me too.

Workaround in #8 worked for me too - thanks @jayemel

Pushing it back to NW based on maintainer feedback in #7, though I am not 100% sure if this really needed?