1415238 - Resizing "device" in RDM causes User Agent to change

Status: RESOLVED DUPLICATE of bug 1319944

(DevTools :: Responsive Design Mode, defect)

Description

[Mike Taylor [:miketaylr]]

STR)

1. Open RDM
2. Select a preset device (or custom one)
3. check navigator.userAgent
4. change viewport size of device in the bottom right
5. check navigator.userAgent

expected:
no change

actual: 
it changed

This is not fun when you're using a custom Fennec device and need to debug layout/viewport stuff. Some bugs will only reproduce if the UA string doesn't change.

Comment 1

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

Thanks for filing!

This is a bit of a tricky one.  RDM currently assumes that if you resize when a device is selected, then it should reset to back to "default desktop mode" and clear any device specific properties.

I think we would address your use case by exposing an explicit control for setting the UA separate from the device selector, which would remain set even while resizing, similar to bug 1319944.

Does this seem sufficient, or do you find you also need other device properties applied as well while resizing?

Comment 2

[Mike Taylor [:miketaylr]]

(In reply to J. Ryan Stinnett [:jryans] (use ni?) from comment #1)
> I think we would address your use case by exposing an explicit control for
> setting the UA separate from the device selector, which would remain set
> even while resizing, similar to bug 1319944.

Yeah, that would solve my use case. Thanks!

Comment 3

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

Great!  I'll mark this as a duplicate then.