Small files pane in covr::report()

[MeterDS2021]

As of late, the files pane in covr::report() has a very low height although the actual viewer window in RStudio is much larger.

When clicking on a particular file (ie opening a new tab), the pane extends to the full height. Also, the problem persists when setting options(viewer=NULL), so I wouldn't expect this to be an RStudio issue.

> sessionInfo()
R version 4.1.2 (2021-11-01)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.3 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.9.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               LC_TIME=de_DE.UTF-8       
 [4] LC_COLLATE=en_US.UTF-8     LC_MONETARY=de_DE.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=de_DE.UTF-8       LC_NAME=C                  LC_ADDRESS=C              
[10] LC_TELEPHONE=C             LC_MEASUREMENT=de_DE.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
 [1] prompt_1.0.1      digest_0.6.29     withr_2.4.3       R6_2.5.1          jsonlite_1.7.2   
 [6] covr_3.5.1.9003   magrittr_2.0.1    rlang_0.4.12      cli_3.1.0         lazyeval_0.2.2   
[11] jquerylib_0.1.4   rex_1.2.1         bslib_0.3.1       DT_0.20           tools_4.1.2      
[16] htmlwidgets_1.5.4 crosstalk_1.2.0   yaml_2.2.1        fastmap_1.1.0     compiler_4.1.2   
[21] htmltools_0.5.2   sass_0.4.0

[jimhester]

There seems to be something wrong with DTs automatic detection of fill height, in particular the fillContainer argument of datatable::DT(). Maybe an interaction with newer versions of bootstrap or something along those lines.

A workaround is to stop using this parameter, which is what I did here. It might be worth opening an issue in the DT repository to try to address the root cause though.