When adding a selectbox to input-group-addon the increased padding (?) from alpha 3 breaks the size :

note: the first one is default "out of the box" the second one I "applied" padding-top: 6px; padding-bottom: 6px; to input-group-addon
<div class="form-group row">
<label for="inputPassword" class="col-sm-2 form-control-label">Temperature</label>
<div class="col-sm-6">
<div class="input-group">
<input type="text" name="temp" class="form-control" aria-label="temperature">
<span class="input-group-addon">
<select name="unit_temp">
<option value="C"> °C</option>
<option value="F"> °F</option>
<option value="K"> K</option>
</select></span>
</div>
</div>
</div>
I tried adding form-control to the select, but that does not seem to be intended :

The issue seems to be that padding is 8px; within the input-group-addon, before it was 6px; ?
Tested on Chromebook :
Versie 53.0.2785.55 beta (64-bit)
Platform 8530.49.0 (Official Build) beta-channel leon
Firmware Google_Leon.4389.61.46
Great work guys, keep up ! Thanks for the framework!
<select>s probably aren't sufficiently styleable in CSS to make such a thing work nicely.
You might consider using a dropdown instead: http://v4-alpha.getbootstrap.com/components/input-group/#buttons-with-dropdowns
CC: @mdo for a decision on this feature request.
@cvrebert I can not use dropdown, because of many reasons:
<select> is a component of a HTML formoptions inside dropdown, by typingselectSame here:

Code:
<div class="input-group">
<select class="custom-select form-control">
<option value=""></option>
</select>
<div class="input-group-btn">
<button
type="button"
class="btn btn-success"
>
<i className="fa fa-plus" />
</button>
</div>
</div>
Punting given how problematic this will be across browsers. Even our custom selects aren't 100% styled in every browser and OS. Getting them to match up with the input groups just leaves you with rather gnarly looking components in a lot of environments.
Wait a bit.
You've closed it, but it is still a big bug.
We do not have to customize the select for every browser in the world. It may be worth to focus on modern versions of browsers.
I'm also disappointed, but it was never in the documentation, so I guess its not a "feature" they are willing to implement.
Try to hack it in like I did, I tried it on the latest Chrome & Firefox, and it seemed ok茅 with the decreased padding. Life is easier when you can ignore old browsers...
@svennd That's what I said about old browsers.
We should produce for nearly new ones. I still maintain my proposal as I feel is not too difficult to include a general hack for the select
Adding support for the select _next_ to the addon is probably doable as some folks have shown, but that's not what this issue is asking for. This wants the select in the addon.
Hmm. Yes. I've now seen it. Should I start a new issue regarding this?
<select class="w25 input-group-addon custom-select border-left-0 rounded-0">
<option name="all" value="" selected>dddd</option>
</select>
Work around BS 4.10
<div class="input-group-prepend">
<span class="input-group-text">
<select class=" bg-transparent border-0" id="inputGroupSelect01">
<option selected>Choose...</option>
<option value="1">One</option>
</select>
</span>
</div>
Most helpful comment
Work around BS 4.10