Create chunk with shortcut (ctrl+alt+i) and then paste (ctrl+v) causes Rstudio to become unresponsive.

[m1kejay]

System details

RStudio Edition : Desktop
RStudio Version : 1.3.820 (Bug happens with 1.2.x too)
OS Version      :  Windows 10
R Version       : 3.5.1

Steps to reproduce the problem

1. Create a new .Rmd from the menu (I use the little icon, but both 'work')
2. Click OK (all default)
3. Go to line 29
4. press ctrl+alt+i
5. type:

blah %>%
  mutate(blah = blah) %>%
  filter(x != y)

6. Select the code in step 5 with mouse
7. Press ctrl + c
8. Click line 35
9. Press ctrl+alt+i
10. Press ctrl + v.

I originally posted about this bug here: https://community.rstudio.com/t/create-chunk-with-shortcut-ctrl-alt-i-and-then-paste-ctrl-v-causes-rstudio-to-freeze/52849/3

Describe the problem in detail

After following the above steps, the code does not get copied and RStudio becomes unresponsive in ~ 75% of cases. If it doesn't freeze, repeating steps 9 and 10 eventually causes the problem to occur. Rstudio doesn't freeze/crash in the traditional sense (i.e. white screen/unexpected closing). Instead, the cursor is still present and flashing, and it all looks normal, but I can no longer type or engage with the gui.

This bug seems independent of RStudio versions or R.

Describe the behavior you expected

I expect the code I copied in step 7 to be pasted into a new chunk in step 10.

• I have read the guide to submitting good bug reports at https://github.com/rstudio/rstudio/wiki/Writing-Good-Bug-Reports .
• I have installed the latest version of RStudio and confirmed that the issue still persists.
• If I am reporting a RStudio crash, I have included a diagnostics report. https://support.rstudio.com/hc/en-us/articles/200321257-Running-a-Diagnostics-Report
• I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

[andresrcs]

I can confirm this issue

RStudio Edition : Desktop
RStudio Version : 1.3.776
OS Version : Windows 10 pro x64 build (18363)
R Version : 3.6.2

[gregleleu]

Also the case on Mac

RStudio Edition : Desktop
RStudio Version : 1.3.821
OS Version : Catalina 10.15.2
R Version : 3.6.2

[gregleleu]

Same as #6210 ?

[kevinushey]

Looks like we're getting stuck in a JS infinite loop here:

For some reason, w.$oldWidget and w are the same thing, so this loop never exits.

Call stack: