1052815 - [e10s] Closing toolbox in second tab disconnects the front from other toolbox

Status: RESOLVED DUPLICATE of bug 1049103

(DevTools :: Framework, defect)

Description

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

STR:
1. Open two tabs.
2. Open a toolbox in each tab.
3. Close the second toolbox but leave the tab open.
4. Try to inspect something using the remaining toolbox.

None of the tools will work because the Front has somehow become disconnected or been destroyed.

Comment 1

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

The above STR need to be in an e10s instance of Fx.

As far as I can see this is what happens (I may very well be completely wrong):
1. When a tab is closed the onMessageManagerDisconnect observer is triggered.
2. mm.sendAsyncMessage("debug:disconnect"); is sent, which removes tab actors for all tabs.
3. The remaining toolbox is completely broken because there are no actors for it to interact with.

I have spent a few days debugging this and seem to be going in circles. I suspect that dcamp is the best person to look into this as he created this file.

@dcamp: Can you take a look at this? The more I look the more confused I get :o/

Comment 2

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

Can't find it now, but I think I've seen Alex mention this in another bug.

Comment 3

[Alexandre Poirot [:ochameau]]

Yes, comment 1 is similar to what I described in bug 1049103 comment 3.
I described there what should be done.