If I set a breakpoint in a package function, then when execution hits that breakpoint, a SECOND COPY of the same source file is displayed in the code window. I can then step through, etc. with that window (I'll call that the "second version".) However, the red dot with the breakpoint stays in the original copy of the file. When debugging is over, the second copy stays open.
- If I debug again, it does not display yet a third version if I havbe left the second version open.
- If I unset the breakpoint in the first version, it doesn't trace anymore.
- If I set a new breakpoint in the second version, it ignores any breakpoints in the first version (but does not remove the red dot). The red dot appears in the second version.
- The second version "sticks" in the sense that if I keep it displayed and close the first version, I can set and unset breakpoints in it and not have additional windows come up. However, if I disable all breakpoints in it and close it, then reopen the file, I am back to square one with a second version being displayed the first time I make and hit a breakpoint.
This is mostly annoying because it is disorienting and creates clutter. However, it can be more pernicious. For example, if I edit the first version of the file, those changes are not shown in the second version. And if I edit the second version of the file, I get an error message:
ERROR: cannot remove earlier installation, is it in use?
I have tried restarting the system. I have tried upgrading to the latest version of RStudio. I have tried disabling and then re-enabling the
--with-keep.source flag. None of this changes the behavior.
I cannot provide a reproducible example. This just started happening. If I swith to another project, I don't get the same behavior. When I switch back to the project where this happens, it happens again. So it is project-related.
- RStudio Edition: Desktop
- RStudio Version: 1.3.1056
- OS Version: Windows 10 NT (x86_64-w64-mingw32/x64)
- R Version: 4.0.1
R version 4.0.1 (2020-06-06) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 18363) Matrix products: default locale:  LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252  LC_MONETARY=English_United States.1252 LC_NUMERIC=C  LC_TIME=English_United States.1252 attached base packages:  stats graphics grDevices utils datasets methods base other attached packages:  mgcv_1.8-31 nlme_3.1-148 emmeans_1.4.8090005 loaded via a namespace (and not attached):  statmod_1.4.34 tidyselect_1.1.0 zoo_1.8-8 xfun_0.14 purrr_0.3.4  splines_4.0.1 lmerTest_3.1-2 lattice_0.20-41 generics_0.0.2 colorspace_1.4-1  vctrs_0.3.1 htmltools_0.4.0 yaml_2.2.1 survival_3.1-12 rlang_0.4.6  rsm_2.10 nloptr_188.8.131.52 pillar_1.4.4 glue_1.4.1 multcomp_1.4-13  lifecycle_0.2.0 plyr_1.8.6 munsell_0.5.0 gtable_0.3.0 bdsmatrix_1.3-4  mvtnorm_1.1-0 codetools_0.2-16 coda_0.19-3 evaluate_0.14 coxme_2.2-16  knitr_1.28 pbkrtest_0.4-8.6 parallel_4.0.1 TH.data_1.0-10 Rcpp_184.108.40.206  xtable_1.8-4 scales_1.1.1 lme4_1.1-23 ggplot2_3.3.1 packrat_0.5.0  digest_0.6.25 dplyr_1.0.0 numDeriv_2016.8-1.1 grid_4.0.1 tools_4.0.1  sandwich_2.5-1 magrittr_1.5 tibble_3.0.1 crayon_1.3.4 pkgconfig_2.0.3  MASS_7.3-51.6 ellipsis_0.3.1 Matrix_1.2-18 estimability_1.3 minqa_1.2.4  rmarkdown_2.2 rstudioapi_0.11 R6_2.4.1 boot_1.3-25 compiler_4.0.1
Referred here from support.rstudio.com