Snippets using evaluation seem to evaluate twice on RStudioServer 1.2.1015

Code snippets using evaluation, for example the ts below seem to be getting evaluated twice when triggered with Shift + Tab (tested with recent Chrome and Firefox). The result looks like the attached image for the below snippet.

snippet ts
  `r paste("#", date(), "------------------------------\n")`

On a side note, when triggered with autocomplete + Enter, all works as expected.
Also tested on RStudio Server 1.1.453 where the issue is not present.

Thanks for the bug report! We're now tracking this here: