Clangd virtual function proposal not always shown

I only get the virtual function proposal widget when the editor conataining the virtual function declaration is currently opened.

Steps to reproduce:

• Checked out 3112d063e84dd48ac56aad912e4b54d52e1c809a
• No editor opened
• open codeassistant.cpp:230:64
• trigger follow symbol
• iassistprocessor.h:43:30 is directly opened without showing the virtual function proposal
• ctrl+tab to previous editor location
• trigger follow symbol again
• virtual function proposal is shown
• select TextEditor::IAssistProcessor::immediateProposal
• close editor
• trigger follow symbol again
• iassistprocessor.h:43:30 is directly opened without showing the virtual function proposal again

I could also reproduce that behavior with IEditor::toolBar()