Matrix field :notempty: field problems

[mofman]

Description

Essentially the :notempty: keyword only works when the field is virgin.
Once you have added a block to the field and then saved and then return later to remove all blocks, the :notempty: keyword no longer works and entries will still appear even if they have no blocks.

{% set events = craft.entries.section('whatsOn').eventSuites(':notempty:').all() %}

<h1>Show events which have suites</h1>
{% for event in events %}
    {{ event.title }}<br />
    {{ event.eventSuites|length }}<br />
{% endfor %}

<h1>Show events which do not have suites</h1>
{% set events = craft.entries.section('whatsOn').eventSuites(':empty:').all() %}

{% for event in events %}
    {{ event.title }}<br />
    {{ event.eventSuites|length }}<br />
{% endfor %}

Additional info

• Craft version: 3.1.23
• PHP version: 7.2
• Database driver & version:
• Plugins & versions:

[brandonkelly]

Fixed for the next release. Thanks for reporting!