Redmine

Redmine 5.0.5: Custom field format 'Float' does not support values inserted in the users language, e.g., 1,22 instead of 1.22.

# lib/redmine/field_format.rb:539
def validate_single_value(custom_field, value, customized=nil)
  errs = super
  errs << ::I18n.t('activerecord.errors.messages.invalid') unless (Kernel.Float(value) rescue nil) # <-- Kernle.Float(value) accepts only 1.22!
  errs
end

The values needs to be normalized into the accepted format before it will get validated. The method could look something like this:

def normalize_float(value)
  delimiter = I18n::t('number.format.delimiter')
  separator = I18n::t('number.format.separator')
  value.gsub!(/[#{delimiter}#{separator}]/, delimiter => '', separator => '.')
end