For example when `attachable: false` is used with a modal, or if IE11/Edge is used (Absolutely positioned elements inside flex containers in IE behave differently)
**Critical Bugs**
- **Modal** - Fixed issue where `scrolling modal` would not allow for scrolling with touch devices (including mobile). #6449
**Bugs**
- **Dropdown** - Fixed issue where `onChange` when used with `action: hide` would be missing the third param `$item`#6555
- **Dimmer** - Dimmer now sets `variation` at runtime, to support run-time swapping between `top aligned` and `middle aligned` using `.dimmer('setting', 'variation', 'top aligned')`