Cannot set both min and max values for numeric fields

The following code appears to solve the issue:

/**
 * {@inheritdoc}
 */
public function getConstraints(array $settings): array {
  $constraints['Regex']['pattern'] = '/^[+-]?((\d+(\.\d*)?)|(\.\d+))$/i';
  
  // Handle range constraints
  if ((isset($settings['min']) && $settings['min'] !== '') || 
      (isset($settings['max']) && $settings['max'] !== '')) {
    
    // If both min and max are set, use notInRangeMessage
    if ((isset($settings['min']) && $settings['min'] !== '') && 
        (isset($settings['max']) && $settings['max'] !== '')) {
      
      $min = $settings['min'];
      $max = $settings['max'];
      $constraints['Range']['min'] = $min;
      $constraints['Range']['max'] = $max;
      $constraints['Range']['notInRangeMessage'] = $this->t('%name: the value must be between %min and %max.', [
        '%name' => $settings['name'],
        '%min' => $min,
        '%max' => $max,
      ]);
    }
    // Only min is set
    elseif (isset($settings['min']) && $settings['min'] !== '') {
      $min = $settings['min'];
      $constraints['Range']['min'] = $min;
      $constraints['Range']['minMessage'] = $this->t('%name: the value may be no less than %min.', [
        '%name' => $settings['name'],
        '%min' => $min,
      ]);
    }
    // Only max is set
    elseif (isset($settings['max']) && $settings['max'] !== '') {
      $max = $settings['max'];
      $constraints['Range']['max'] = $max;
      $constraints['Range']['maxMessage'] = $this->t('%name: the value may be no greater than %max.', [
        '%name' => $settings['name'],
        '%max' => $max,
      ]);
    }
  }
  
  return $constraints;
}

I suppose, something similar should also be added to the IntegerType.php as well.

Okay thanks for the report. I'll put together a patch soon for this issue.

Try the patch please.