Unconsistent branch drawing with JSROOT

[lmollier37]

Hi experts,

I have seen something that seems to be a bug to me. When i use JSROOT to open a root file that contains a tree (containing branches), there are a few branches that are displayed wrongly compared to the usual TBrowser. I am not sure why it is occurring. Am I doing somethign wrong or is it a bug in JSROOT?
This is what I see in JSROOT:

And this is what should be drawn (from TBrowser):

*Br 289 :pass_twolepSS_LooseLH_NOSYS : pass_twolepSS_LooseLH_NOSYS/B *
*Entries : 4169 : Total Size= 7064 bytes File Size = 3519 *
*Baskets : 22 : Basket Size= 512 bytes Compression= 1.77 *

For more information on the behaviour in JSROOT, if I use the draw options "HIST", it displays the right number of events but the histogram is still wrong:

I can share other information if needed, let me know,

Thanks for your help!
Lucas