I use GnuCash on Polish copy of Windows. To force use of English UI I use environment.local: [Variables] LANG=en_US.UTF-8 LANGUAGE={LANG} In order to avoid the bug https://bugs.gnucash.org/show_bug.cgi?id=797047 I installed gnucash-3.4-2019-01-14-git-3.4-22-g3ab5a2be5+.setup.exe. I noticed that when using English UI the Date column in registers is empty - I had to revert to Polish UI (remove environment.local) to get the dates displayed.
Created attachment 373128 [details] Dates appear when the variable LANG is commented
Created attachment 373129 [details] Dates disappear when using the variable LANG (LANG=es_ES)
It seems that the missing dates problem appears whenever LANG is used.