We have 2 problems:

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Problem 1-): Global macros are not displayed on the screen

In the Zabbix database, we have 339 Global Macros:

MariaDB [zabbix]> select * from globalmacro order by 1;
-----------------------------------------------------------------------------------

-----------------------------------------------------------------------------------

...

-----------------------------------------------------------------------------------
339 rows in set (0.00 sec)

MariaDB [zabbix]>

But navigating in the frontend (interfae web) in: Administration -> General -> Macros, 

only 333 Macros are shown on the screen.

No button appears to open another page to see the other macros that are not appearing.

See file "macros.docx" for more details. -> macros.docx

What could be causing this?

I still have more macros that need to be created.

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Problem 2-): Replaced / changed macros inside the host do not have their values saved

In the frontend (web interface) when I navigate in:
Configuration -> Hosts -> Click on the name of a host -> Then click on Macros -> Inherited and host macros (to see host macros).
The frontend loads all Macros I edit a macro

No button appears to open another page to see the other macros that are not appearing.

The frontend loads all macros and I edit 2 macros:

...

Note that the macro "{$ URL_PRD_WGET1_SSL_SASC_NOME1}" below has not been changed:

And finally click Update.nd in the sequence, if I click on "Host macros", and the message appears:

What could be causing this?

Queried the database, we see that only the 2 macros that were actually edited, are OK:

MariaDB [zabbix]>
MariaDB [zabbix]> select hostid, host from hosts where host='DVEN--SRV-PRD-dvsrv-ebs-bd';
----------------------------------+

----------------------------------+

----------------------------------+
1 row in set (0.00 sec)

MariaDB [zabbix]> select * from hostmacro where hostid=10283;
----------------------------------------------+

----------------------------------------------+

----------------------------------------------+
2 rows in set (0.00 sec)

MariaDB [zabbix]>

I already removed Macro:

And I updated with the click of the Update button:

Then, we return to the Hosts screen:

But even so, if I repeat the process / steps:

The message reappears:

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