microtype CTAN package warning with beamer presentation format

[cderv]

dir.create(tmp_dir <- tempfile())
owd <- setwd(tmp_dir)
xfun::download_file("https://raw.githubusercontent.com/rstudio/rmarkdown/main/tests/testthat/test-formats.Rmd")
rmarkdown::render("test-formats.Rmd", rmarkdown::beamer_presentation(), quiet = TRUE)
#> Warning: Package microtype Warning: Unable to apply patch `footnote' on input line 149.

I have this locally. Probably related to issue with the microtype package as in rticles (ex: https://github.com/rstudio/rticles/pull/455 )

Maybe this is not impactful but worth looking

[duckmayr]

I also experience this issue, receiving the warning

Warning: Package microtype Warning: Unable to apply patch `footnote' on input line 111.

Setup:

• OS: Ubuntu 22.04
• R version: 4.1.2
• rmarkdown version: 2.14
• RStudio version: 2022.06.0 Build 343

[cderv]

I believe this is something in the template that creates this. Possibly related to https://github.com/schlcht/microtype/issues/11

I did not have a look yet. However, if anyone finds the lines in tex file that cause this, it would be helpful. This is possible from the Pandoc template directly.