Dropdown menu incorrect width when attached to a button

[puskala]

Bug Report

When using the dropdown button as described in https://fomantic-ui.com/modules/dropdown.html#floating the dropdown menu does not adjust to correct width.

The same issue appears in the documentation (Floating > Save button, click on the arrow to open the menu) https://fomantic-ui.com/modules/dropdown.html#floating

The problem is that the opening menu is too narrow and the texts extend beyond it.

1. Go to https://fomantic-ui.com/modules/dropdown.html#floating
2. Click on the down arrow beside the Save button
3. The opening menu is too narrow

Expected result

The menu should be wide enough to host the content.

Actual result

The menu is as wide as the button (way too narrow)

Testcase

Described above in how to produce.

Screenshot (if possible)

Version

2.8.5

[lubber-de]

This is already fixed by #1505