$I->selectOption() fails if two submit buttons present

[fdjohnston]

I have created the following simple markup:

<form method="post" action="/test/create">
    <button type="submit" >Save</button>
    <select name="sandwichselect" id="sandwichselect">
        <option value="1">Sandwich</option>
        <option value="2">Better Sandwich</option>
    </select>
    <button type="submit" >Save</button>
</form>

When I run the following simple test

$I->selectOption("form select[name='sandwichselect']", "1");

It fails with the following error:

InvalidArgumentException: Input "sandwichselect" cannot take "" as a value (possible values: 1, 2).

Removing the second submit button fixes the problem.
I have tried using different names and Ids for the submit buttons, but that has not helped.

[fdjohnston]

A fix for this issue has been merged.