fix(QTabs): protect updateContainer() against being executed too early
fix(QTabs): protect updateContainer() against being executed too early

quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework,rstoenescu/quasar-framework,quasarframework/quasar,rstoenescu/quasar-framework,quasarframework/quasar