All below is referring to GUI run in mode "contextual" - I haven't tested other modes.
If one presses in the trophy shot mode the key for help (in my case "F") and quits the trophy shot mode before the messages disappear by hitting "Esc", the help info message of the GUI will stay permanent until the next trophy shot.
If one does it again then while in trophy arrange mode, the different pop-up info will stay TOGETHER with the trophy shot mode info that was problematic before and already disappeared. Both infos will stack on top of each other
If the messages were faulty as described above and got removed by taking another regular trophy shot, the pop-up info during the trophy shot will remain empty.
If due to taking a regular trophy shot, the stuck messages disappeared, they will re-appear with other pop-up messages such as scent eliminator and after re-appearing stay permanent until the next trophy shot.