Redmine

I seem unable to save query column selections, what am I missing here? This limitation is severely limiting our rollout, unsure if this is a known bug, or whether my install has gone sideways (or perhaps I'm just being a little thick).

Environment:
  Redmine version                4.1.1.stable
  Ruby version                   2.6.6-p146 (2020-03-31) [x64-mingw32]
  Rails version                  5.2.4.2
  Environment                    production
  Database adapter               SQLServer
  Mailer queue                   ActiveJob::QueueAdapters::AsyncAdapter
  Mailer delivery                smtp
SCM:
  Git                            2.29.2
  Filesystem                     
Redmine plugins:
  additional_tags                1.0.0
  additionals                    3.0.1-master
  redmine_ckeditor               1.2.3
  redmine_embed_html5_video      0.0.3
  redmine_impersonate            2.0.0
  redmine_mentions               0.0.1
  redmine_silencer               0.4.3
  redmine_smile_project_enumerations_custom_field_format 1.3.14
  redmine_sudo                   1.0.0
  redmine_theme_changer          0.4.0