TYPO3 8.7.24：在tca中使用selectTree时的图形错误

Question

When I'm using rendermode selectTree for my kategorie selection, then I've got an graphical bug. The bug independent from browser (tested in chrome and firefox). I found out, that it looks like the svg icon I'm using for this type.

My tca config for the field "eltern":

    'eltern' => [
        'exclude' => true,
        'label' => 'Eltern',
        'config' => [
            'type' => 'select',
            'renderType' => 'selectTree',
            'foreign_table' => 'tx_adressen_domain_model_adresskategorie',
            'foreign_table_where' => 'ORDER BY tx_adressen_domain_model_adresskategorie.kategoriename',
            'size' => 20,
            'treeConfig' => [
                'parentField' => 'eltern',
                'appearance' => [
                    'expandAll' => true,
                    'showHeader' => true,
                ],
            ],
            'maxitems' => 1,
            'minitems' => 0,
        ],
    ],

Answer 1

Resolved the problem with using a 16x16 Pixel PNG icon instead of a svg icon

TCA:

return [
...
  'iconfile' => 'EXT:adressen/Resources/Public/Icons/Adresskategorie.png',
...