#_DETAILS, #_EXCERPT no longer interpreted as a placeholder

Using WordPress 5.9.2.
Following the upgrade to EME ver. 2.2.66 the following placeholders are displayed as literal strings rather than by the data that should be replacing them:
#_DETAILS
#_NOTES
#_EXCERPT

Before the upgrade, this did not happen.

The other placeholders I use are still correctly replaced by the underlying data.

So, #_DETAILS (or #_NOTES) is used in a template as follows (text view):
<div class="ccc-event-col2">#_DETAILS</div>
The visitor sees the event displayed with the literal string ‘#_DETAILS’ rather than the details of the event.

I don’t know if it is relevant, but the style is defined as:

.ccc-event-col2 {
    float: left;
    padding: 10px;
    text-align: left;
    vertical-align: top;
    line-height: 120%;
    width: 38%;
}

#_EXCERPT is used in the eme_events shortcode, in which a format is given that overrides the default event list format. Included is the code:
<span style="font-size:22px;">#_EXCERPT</span>[eme_if tag='#ESC_CITY']<br />#_CITY[/eme_if]

Instead of displaying the excerpt followed by the event city (if it is defined), the visitor now sees the literal string:

#_EXCERPT[eme_if tag='MyTown']
MyTown[/eme_if]