I know there had been few topics here in the Community, dedicated to time formatting and specifically to AM/PM vs 24 H view format.
However, before posting here I ensured that my underlying spreadsheet (SS settings) and my testing phone are both in English UK date/time format/locale. Yet, surprisingly enough, I have the same issue where my times are with AM/PM tags.
Here is the view in table format:
However, in the Details/Form view of the same table, the times look ok:
Thus it seems to be that only TABLE view is wrong.
The colums in question have DateTime Type.