TUniQuery replacing spaces with question marks. The spaces come from calls to TimeToStr(MyTTimeVar). It only happens on 64bit Android. Why?

Question

I have the following code:

var Date: TDate := now;
var Time: TTime := now;
...
var Text: string := trim(DateToStr(Date)) + '|' + trim(TimeToStr(Time));
UniQuery1.FieldByName('BATCH DATA').AsString := Text;

After this code, the Text variable still contains 9/6/24|8:14:15 AM as you would expect.

However, UniQuery1.FieldByName('BATCH DATA').AsString contains 9/6/24|8:14:15?AM.

In other words, assigning the value to a TUniQuery field swapped the space for a ?.

The database it is connected to is a SQLite database that is UTF-8 encoded. I'm using Delphi 11.3 Alexandria.

I'm assuming this has something to do with character encoding, but I have no idea why a space would be encoded differently or how to see or change the character encoding of the string that comes from TimeToStr().

The really odd thing is this doesn't happen on 32bit or 64bit Windows or our 32bit Samsung Tab Active 2 Android tablets. It copies the Text variable with the original spaces. However, we just upgraded to Samsung Tab Active 5 Tablets which are 64bit tablets and that's when the behavior changed.

Please help! I have been beating my head against this for days! What can I do to try to resolve this?