Hi @office9,
I found this question while doing a community cleanup. I believe I have a possible answer for you. I tested various things, and what finally seemed to work (judging by looking at the LTI config via the API) was to add the following placement to your LTI 1.3 JSON:
I hope this late response may still help, but I also want to stress that I couldn't find any official documentation on this, so take please take this as an unofficial option.
-Chris
