<button> elements with no "type" don't send their value on submit

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Description:

elements with no type attribute default to type "submit" (see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/button#attr-type).

When clicked, the form should be submitted and the request should contain the value of the button.

Expected Behavior:

With this form:

<form>
<button name="button1" value="ok">Button without type</button>
<button name="button2" value="ok" type="submit">Button with type</button>
</form>

Clicking either button should send the values "button1=ok" or "button2=ok".

Actual behavior:

Without ajaxform, the form works as expected in Firefox and Chromium.

With ajaxform, clicking button2 works as expected, but clicking button1 doesn't send "button1=ok".

Remarks

This is caused, as far as I understand, by the captureSubmittingElement function looking explicitly for elements with "type=submit".

Start at the captureSubmittingElement function mentioned in the report and reproduce the behavior with the provided HTML form. Verify that clicking either button submits its name and value, including the button without an explicit type attribute.