I saw similar things before and desperately trying to fix every case where dash would appear on that timer screen. To be honest timer screen has been a real nightmare for me
Without going to too much detail I'll try to explain how does Dashboard work. Each frame has several scenes, for example dash, mirror, that timer of question, car shadows, ... And now between all this I have to determine when to draw my dashboard. Issue with that timer is that its very similary drawn to dashboard, even though it doesn't look so.
Reason why dashboard appeared on timer screen is because you disabled real dashboard (clocks) in your LFS options.
I've fixed that specific case now in my version, by adding one more check when searching for dashboard scene.