On a different note the Beaver template module is throwing errors and locking things up after an update to either L&L or BB (for me anyway). Insert by template shortcode still works great.
The default format L&L uses when displaying ACF date/time/datetime fields has changed to respect the format set in the ACF settings, but that shouldn’t affect anything in your case because you’ve specified a format in your template (timestamp).
I’ve tested out a few things on the latest version of L&L with an ACF datetime field date_time_field set to right now and the logic still all works as expected.
<p><Date format=timestamp>yesterday</Date></p>
<p><Field acf_date_time=date_time_field format=timestamp /></p>
<p>
<If check="{Field acf_date_time=date_time_field format=timestamp}" more_than value="{Get yesterday}">
The date field is after yesterday!
<Else />
The date field is before yesterday.
</If>
</p>
<p>
<If check="1711097617" more_than value="1710979200">
First number is bigger.
<Else />
Second number is bigger.
</If>
</p>
Output:
1710979200
1711098516
The date field is after yesterday!
First number is bigger.
Is there any chance you’re using Beaver Themer to render this template? If so, that might be the issue and not any kind of template syntax. Seems like Eliot’s looking into that as we speak. If so, I might move this comment over to that thread to keep this issue consolidated.