Thanks for following up. If I use Siri, everything works properly and in fact I use this method frequently, but especially in work settings it's not always possible to speak aloud to the device.
The problem occurs when manually adding the reminder directly in the Reminders app. The (helpful!) way it used to work was: in the Reminders app I'd tap New Reminder and then type something like, "Call Dad Thursday 21:00" and the Suggested Time that appeared below would be (for instance) 12/30/21 21:00. And, "Thursday 21:00" was highlighted in blue. I would tap the suggested time below (12/30/21 21:00) and the reminder would be correctly scheduled at that time. And, the blue "Thursday 21:00" would disappear from the reminder text itself, so that the reminder was correctly entered as "Call Dad" and be scheduled for 12/30/21. Easy and effective!
Now this no longer works. Now, when I tap New Reminder and enter "Call Dad Thursday 21:00," the suggested time below is instead the current day and time. "Thursday 21:00" is highlighted in blue as before, but only the current day/time is suggested (see attached image). And tapping that blue text (Thursday 21:00) does nothing. In fact, the text turning blue suggests that it's a prompt to select that time, but the only option to choose a time is either the suggested current day/time, or the extended manual process – that is, the highlighted blue text is meaningless. So, instead of the nice, quick method above, I now write "Call Dad" and then (1) tap the calendar icon and then (2) tap "Date & Time" and then (3) tap on the desired day and then (4) tap on the Time button and then (5) choose a time. I understand I can set a reminder correctly this way or with Siri, but there used to be a much more user-friendly and smoothly working process that did not require five extra steps and that now no longer works.
I believe the Reminders app worked as I expected until very recently, so I would guess until the iOS 15.2 update. I am not 100% sure about this, though, and it may be that it stopped working correctly a little earlier.
