Search and grouping problems after upgrade

I’ve tried to work with other versions (2.0.0 & 2.0.5) but the result is the same.

My browser console gives the following errors and warnings:

Controller id is defined by options and by template, the template id will be overriden by the option id.
passbolt.js:3:462466
TypeError: Port “000” is not a valid port
steal.production.js:3:800923

Error parsing header X-XSS-Protection: 1; mode=block, 1; mode=block: expected semicolon at character position 14. The default protections will be applied.
passbolt.js:3 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help, check https://xhr.spec.whatwg.org/.
send @ passbolt.js:3
166passbolt.js:3 Controller id is defined by options and by template, the template id will be overriden by the option id.
init @ passbolt.js:3
passbolt.js:3 Uncaught TypeError: Port “000” is not a valid port
at Function.a.ensureValidPort (passbolt.js:3)
at Function.a.parseHost (passbolt.js:3)
at Function.a.parseAuthority (passbolt.js:3)
at Function.a.parse (passbolt.js:3)
at a.v.href (passbolt.js:3)
at new a (passbolt.js:3)
at a (passbolt.js:3)
at u.safeUri (passbolt.js:3)
at Object.eval (passbolt.js:3)
at t.getValueAndBind (passbolt.js:3)

Is this a hint?

Furthermore I’ve read the following issue:

At my database the same problem with character_set_name | collation_name exists.
Afterwards I’ve checked my database backups (holland-backup) and the the size of backup was 1,8 MB before Upgrade and only 725 KB after the upgrade.
Is there really such a great difference in the stored data???

Please give further advice, Thanks!