Like Filter in data-summary not working

I could not get a like filter working summary.
If I choose the exect data-summary it's working, but not woth a "like" selector:

**Working:**
```
card_mod:
  style: |
    .event[data-summary="XXXXX"] {
      background-color: #ff0000 !important;
    }   
```

**Not working:**
```
card_mod:
  style: |
    .event[data-summary~="XXXXX"] {
      background-color: #ff0000 !important;
    }   
```