All markup broken after update

It seems, that problem with renderer, not admin part – in editor posts looks good, but on frontend its broken:

Page not working itself: https://tominoff.ru/2018/08/01/lyapy-internet-magazinov-na-krupnobyudzhetnyh-primerah/

Page working, but texts/images are broken: https://tominoff.ru/2018/07/19/rejting-populyarnosti-cms-saas-reshenij/

Also tried to disable all plugins, but Gutenberg – it seems that there is no incompatibility problems. (functions.php file is really simple – there is just setup_theme, wp_title and navigation_template hooks used)

If this would help – here is default gutenberg page – https://tominoff.ru/2018/11/18/dobro-pozhalovat-v-redaktor-gutenberg

• This reply was modified 6 years ago by ikenfin.
• This reply was modified 6 years ago by ikenfin.
• This reply was modified 6 years ago by ikenfin.

Downgrade to 4.3 seems fixed problem, so the problem occurs with 4.4

Please, let me know when you will want to look at problems – i will update to 4.4 again to show

• This reply was modified 6 years ago by ikenfin.

Where can I get version 4.3?

@antoniomanco here – https://downloads.www.ads-software.com/plugin/gutenberg.4.3.0.zip

Thank you Ikenfin and wait for the next update

4.5.1 – problem still happen. Can someone confirm?

Here is some screenshots (using latest 4.5.1):

Be careful, images size are 0.9~1mb!

Default gutenberg test page:

1. admin part – looks great, there is no problems with gutenberg: screenshot-1

2. frontend part – page totally breaked: screenshot-2

My own post example

1. admin part – again, working nice: screenshot-3

2. frontend part – missing picture, also text screwed up: screenshot-4

• This reply was modified 5 years, 12 months ago by ikenfin.

UPDATED:

seems i’ve found root of evil – gutenberg was broke because of mbstring.func_overload = 2, which is requirement of bitrix cms, which was installed on server in past.