TCA: Icons below select fields are always shown
I expect that no icon is shown below a select field of render type selectSingle by default or when the field is configured in TCA as follows
$GLOBALS['TCA'][<table name>]['columns'][<field name>]['config']['fieldWizard'] = [ 'selectIcons' => [ 'disabled' => true, ], ];
For each entry in the select list an icon is shown. When no icons are configured for a single entry, the same default icon is repeated for every entry.
Current documentation states:
"Render thumbnails of icons below the select drop-down. Disabled by default."