I opended a old 4.6 patcher in 5 ... hmm ... a lot of patching work is now broken but something is still fine. Now its absolutely not possible to change the patcher windowsize. The little triangle wit diagonal lines at the right bottom of the window (Toolbar enabled)doesn't exist. I tried to generate a new empty patcher window but if I copy/paste the old things from the not resizeable winde, the new window is the also nit resizeable? Whats wromg here. Where I can put the resizeability of a patcher window?

Can't change the size of the patcher window