Marius BALTEANU wrote:
> Do you have any JS error in the console log?

I'm sorry, which one is the console log?

This is my apache access log (I'm using mod-passenger) whe loading a new issue
<pre>
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /projects/ufficio-tecnico/issues/new HTTP/1.1" 200 6476 "https://my.public.domain/projects/ufficio-tecnico/issues" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /stylesheets/jquery/jquery-ui-1.11.0.css?1553987320 HTTP/1.1" 200 5851 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/jstoolbar/jstoolbar.js?1553987320 HTTP/1.1" 200 3944 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /stylesheets/responsive.css?1553987320 HTTP/1.1" 200 5142 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /stylesheets/application.css?1553987320 HTTP/1.1" 200 13655 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/responsive.js?1553987320 HTTP/1.1" 200 1028 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/application.js?1553987320 HTTP/1.1" 200 6506 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/jstoolbar/textile.js?1553987320 HTTP/1.1" 200 1672 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/jquery-1.11.1-ui-1.11.0-ujs-4.3.1.js?1553987320 HTTP/1.1" 304 154 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/jstoolbar/lang/jstoolbar-it.js?1553987320 HTTP/1.1" 200 688 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /stylesheets/jstoolbar.css?1553987320 HTTP/1.1" 200 934 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/attachments.js?1553987320 HTTP/1.1" 200 3109 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /javascripts/i18n/datepicker-it.js?1553987320 HTTP/1.1" 200 976 "https://my.public.domain/projects/ufficio-tecnico/issues/new" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /images/sort_desc.png HTTP/1.1" 304 179 "https://my.public.domain/stylesheets/application.css?1553987320" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /images/bullet_add.png HTTP/1.1" 304 179 "https://my.public.domain/stylesheets/application.css?1553987320" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /images/bullet_arrow_left.png HTTP/1.1" 304 179 "https://my.public.domain/stylesheets/application.css?1553987320" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
000.111.222.333 - - [22/May/2019:17:08:08 +0200] "GET /images/bullet_arrow_right.png HTTP/1.1" 304 179 "https://my.public.domain/stylesheets/application.css?1553987320" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0"
::1 - - [22/May/2019:17:08:16 +0200] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.18 (Ubuntu) SVN/1.9.3 Phusion_Passenger/6.0.2 mod_perl/2.0.9 Perl/v5.22.1 (internal dummy connection)"

</pre>

This is redmine production log:
<pre>
Started GET "/projects/ufficio-tecnico/issues/new" for 192.168.3.21 at 2019-05-22 17:16:16 +0200
Processing by IssuesController#new as HTML
  Parameters: {"project_id"=>"ufficio-tecnico"}
  Current user: user (id=3)
  Rendering issues/new.html.erb within layouts/base
  Rendered issues/_form_custom_fields.html.erb (3.0ms)
  Rendered issues/_attributes.html.erb (12.4ms)
  Rendered issues/_form.html.erb (22.9ms)
  Rendered attachments/_form.html.erb (1.3ms)
  Rendered issues/_watchers_form.html.erb (3.6ms)
  Rendered issues/new.html.erb within layouts/base (29.3ms)
Completed 200 OK in 214ms (Views: 41.7ms | ActiveRecord: 155.0ms)
</pre>

If you tell me more precisely where to look at I'll post you anything it might be helpful...

thank you