Display issue when several companion windows are opened

[iribarnesy]

Steps to reproduce:

• On the demo app
• Create an annotation and save it. Don't close the companion window (horizontal or vertical mode)
• Then, edit any annotation (so open another companion window)

Result:

• Not responsive: the annotations are displayed with an offset

Expected result:

• The annotations are still at the same place with the same width/height

Edit: Actually, this display issue is present as soon as the canvas is reduced (even if the developer console is opened) but only on annotations newly created.

Questions:

• In the long term: is this responsive fix already planned?
• In the shorter term: should the annotation plugin handle this case of several companion windows opened?
• If no, is it possible to prevent the user from opening several companion windows (by closing any already opened window when the user opens a new one)?

Thank you in advance for your answer :)

Screenshots:

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