Reproduction

1. move (or remove) the settings folder from .config/QtProject to have a clean start
2. Start a new project (or use one of yours) for example the "Qt Widgets Application"
3. hit F5 to run debug
   • the view changes to debugging and you see all the fancy debug windows
4. stop debugging & close the qtCreator
5. Start the QtCreator select the previously project from recent Projects
6. hit F5
   • the view switches to Debug (on the left) but all the fancy debug windows are gone
   • And from here on I found no way on getting them all back, without deleting all settings on each start of the QtCreator

Partly working workaround, without loosing all settings on each restart

The "Window->Views->Reset to Default Layout" Selection just partly helps since the debug controls (where I pause, stop, continue) are still missing and I found no way on making them visible

Some more analysis

It seems that it has to do with the Qt Version that is used:

	Qt 5.10.1	Qt 5.11.0	Qt 5.11.1 (distributed by Qt)	Qt 5.11.1 (distributed by arch linux)
QtCreator v4.6.0		TODO	TODO
QtCreator v4.6.1	TODO	TODO	TODO
QtCreator v4.6.2

So it seems that it is a problem with the distributed arch Qt package... or the way they build the qtcreator