Product Subtitle is not directly under the Product title

[Klausmit]

Problem
The Product Subtitle Plugin is working fine so far. BUT the Product Subtitle is not directly under the main Product subtitle.
Already tried different ways to repair this, didn't work so far.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://zauberhafte-hochzeiten.at/index.php/dekoverleih/
2. Scroll down to the single Products eg.: 'EventDekoArt 0006'
3. find the 'Kerzenglas S' Text a bit far to the left and not directly under the main Title
4. hope that was clear

Expected behavior
The subtitle needs to be exactly under the Main Product Title in the Listings

Screenshots

Desktop (please complete the following information):

• OS: [e.g. OSX 10.14.6]
• Browser [e.g. chrome]

Any help would be great! Thanks. Klaus