Shiny app on iFrame jumping to top on iOS (Safari)

Background: shiny dashboard served by RStudio Connect in an iFrame on another website. Everything works flawlessly in non-mobile devices. However, when viewing the website (and the iFramed Shiny app) on an iPad and Safari, every time we try to scroll on the app, it ends up jumping to the top of the page.

Some initial research led us to this Stackoverflow question/answer. Unfortunately we are not able to implement solution B, and solution A does not work.

Does anyone have any experience with iFramed Shiny and iOS scrolling? In addition, does anyone have any ideas around other ways of embedding shiny apps without using iFrames?