Since there are preview versions, and daily builds of RStudio, could you let us know your exact version? Also, does this happen for you in both R and RStudio, or just in RStudio (see FAQ below for disambiguation).
Does this happen for literally any data and any join in dplyr? For example, what happens if you run:
library(dplyr)
example("inner_join")
If you can run it successfully in vanilla R, could you please turn this into a self-contained reprex (short for reproducible example)? It will help us help you if we can be sure we're all working with/looking at the same stuff.
install.packages("reprex")
If you've never heard of a reprex before, you might want to start by reading the tidyverse.org help page. The reprex dos and don'ts are also useful.
What to do if you run into clipboard problems
If you run into problems with access to your clipboard, you can specify an outfile for the reprex, and then copy and paste the contents into the forum.
reprex::reprex(input = "fruits_stringdist.R", outfile = "fruits_stringdist.md")
For pointers specific to the community site, check out the reprex FAQ.