No longer able to turn off Modern Text?

I can appreciate the fact that these examples are "older/resovled" issues, however we did not start experiencing the issue with our published content until about the time that Articulate defaulted the Modern Text setting to on per your recent May 2021 post. 

https://articulate.com/support/article/Storyline-360-Modern-Text-Rendering

We did initially look at the January 2019 article that you referenced as a potential cause, however quickly determined that it did not resolve our issues for a couple of reasons.

1) The display issues were not experienced by all users on all browsers, they were sporadic and inconsistent, and they frequently resolved themselves by closing/reopening the browser.

2) Because enabling the Font Download setting in learner's browsers was not a viable option for our very diverse independent advisor audience, as they operate on a variety of networks that they may or may not have control over. 

However through extensive testing, with assistance from the "older/resovled" articles I referenced earlier, we were able to determine that turning off the Modern Text setting and reverting back to Classic Text was a viable workaround. Unfortunately just as we were about to implement that "fix" I happened to run updates to my Articulate software on one of my devices and low and behold the ability to turn that off no longer existed (went from v3.47.23871.0 to v3.5425674.0). 

I've attached a few examples of what we're experiencing and will upload a sample file to the support team as well. But honestly from what I can see Articulate has had a host of missing font and kerning issues for several years now, it's just unfortunate that we didn't start experiencing issues until a mass fix was pushed, so it seems that some additional review/testing of those changes is necessary.