Does this also happen, if you change the perspective manually to "Debugging" ("View -> Perspective -> Debugging") and also if you change back to the default perspective ?
Does it happen on windows or on linux ?
It might be related to the saving (and restoring) of the tabs visibility and order of the "Logs & others" tabs.
I can see it also, but it happens quite fast, but if it is related to saving/restoring the perspective, I can look into it.