Aliaksei Martsinkevich

@Anidetrix yes, I'm aware of this problem, it's one of the reasons why I switched from postcss plugin. Yet webpack css loader can handle it, because it resolve composes as...

@tilnea, I don't work on that project anymore nor do I use css modules rn, so I'm not sure. Most likely it was just `import "common.module.css"`, but it may vary...

This issue is reproduced only when tab has a predefined id. In this case `model.addTab` is called twice: first time when `Layout.onDragDivMouseDown` creates TabNode._fromJson, which automatically [adds it to model](https://github.com/caplin/FlexLayout/blob/e01cb410e8fe27dfec361f127c75c609de544507/src/model/TabNode.ts#L55)...