title: Must subset elements with a valid subscript vector during an dplyr::anti_join()
body: <p>I have this piece of code that is giving me some trouble</p>
  <pre><code>stop_words_extra = c(&quot;extra&quot;,&quot;words&quot;)
  stop_words_vector= append(stop_words_extra, stopwords(kind = &quot;it&quot;), after = length(stop_words_extra))
  stop_words_ita = data.frame(word = stop_words_vector)
  
  text_mining_tweets &lt;- tweets_with_retweet_number_upd %&gt;%
   unnest_tokens(word, text) %&gt;%
   anti_join(stop_words_ita)
  </code></pre>
  <p>This return me an error:</p>
  <pre><code>Errore: Must subset elements with a valid subscript vector.
  i Logical subscripts must match the size of the indexed input.
  x Input has size 19030 but subscript has size 372882.
  </code></pre>
  <p>with this stack:</p>
  <pre><code>  1. +-`%&gt;%`(...)
    2. | +-base::withVisible(eval(quote(`_fseq`(`_lhs`)), env, env))
    3. | \-base::eval(quote(`_fseq`(`_lhs`)), env, env)
    4. |   \-base::eval(quote(`_fseq`(`_lhs`)), env, env)
    5. |     \-`_fseq`(`_lhs`)
    6. |       \-magrittr::freduce(value, `_function_list`)
    7. |         +-base::withVisible(function_list[[k]](value))
    8. |         \-function_list[[k]](value)
    9. |           +-dplyr::anti_join(., stop_words_ita)
   10. |           \-dplyr:::anti_join.data.frame(., stop_words_ita)
   11. |             \-dplyr:::join_filter(x, y, by = by, type = &quot;anti&quot;, na_matches = na_matches)
   12. |               +-dplyr::dplyr_row_slice(x, idx)
   13. |               \-dplyr:::dplyr_row_slice.rowwise_df(x, idx)
   14. |                 \-vctrs::vec_slice(group_keys(data), i)
   15. \-vctrs:::stop_indicator_size(...)
  </code></pre>
  <p>19030 are the rows in <code>tweets_with_retweet_number_upd</code>
  372882 are the rows after I use <code>unnest_tokens(word, text)</code></p>
  <p>It works fine on dplyr 0.8.5, but not in the 1.0.0 version. I see that the new one had some changes about <code>*_joins()</code>, but I don't really know what I'm doing wrong here.</p>
  <p>EDIT:
  Here's a reproducible example. I tried to shrink it down as much I as could: <a href="https://pastebin.com/YxfRsfHW" rel="nofollow noreferrer">https://pastebin.com/YxfRsfHW</a></p>