Hello @MeshachBlue, are you still experiencing this issue with an up to date system?
Yes. Chat window jumps to be larger after dragging it small. Ideally this and multiple other issues would be fixed if Steam simply used the window manager within Ubuntu.
Nothing extracted yet.
If chat window is dragged below its minimum size then released, a subsequent resizing results in the resizing box appearing to be approximately twice as large as what the chat window is.
Only occurs with chat windows.