Typo3 9: Second Language shows content of both translations with Fallback Mode

Question

I've got a Homepage where I have two languages:

• German (Default)
• German easy (Second "Language")

Most of my pages have a translation for german easy, but some don't, which is why I activated the Fallback Typ Fallback Show default language if no translation exists, at first it seemed to work, since it showed content from the default fallback language german, but when I opened up pages where I have a translation to german easy as well, I see content from both languages on the page. This problem only occurs when I open the page with german easy if I open the page with the default language, it only shows the content of that language.

I really don't know what kind of bug that is, or what its causing. I posted a screenshot of my settings and further below the settings of my config.yaml and the setup.typoscript, if that might help anyhow.

Btw, if I turn the fallback type to strict the bug doesn't occur, but then again pages with no translation don't work.

Default Language: Second Language:

config.yaml

base: /
baseVariants: {  }
errorHandling:
  -
    errorCode: '404'
    errorHandler: Page
    errorContentSource: 't3://page?uid=20'
languages:
  -
    title: Deutsch
    enabled: true
    base: /
    typo3Language: de
    locale: de_DE
    iso-639-1: de
    navigationTitle: Deutsch
    hreflang: de-DE
    direction: ''
    flag: de
    languageId: '0'
  -
    title: Deutsch_vereinfacht
    enabled: true
    base: /de/
    typo3Language: de
    locale: de_DE
    iso-639-1: de
    navigationTitle: Deutsch_vereinfacht
    hreflang: de-DE
    direction: ''
    fallbackType: fallback
    fallbacks: '0'
    flag: de
    languageId: '2'
rootPageId: 18
routes: {  }

setup.typoscript

config {
    absRefPrefix = auto
    cache_period = 86400
    debug = 0
    disablePrefixComment = 1
    doctype = html5
    extTarget = _blank
    index_enable = 1
    index_externals = 1
    index_metatags = 1
    inlineStyle2TempFile = 1
    intTarget =
    linkVars = L
    metaCharset = utf-8
    no_cache = 0
    pageTitleFirst = 1
    prefixLocalAnchors = all
    removeDefaultJS = 0
    renderCharset = utf-8
    sendCacheHeaders = 1
    uniqueLinkVars = 1

    // Disable image upscaling
    noScaleUp = 1

    // Compression and concatenation of CSS and JS Files
    compressCss = 0
    compressJs = 0
    concatenateCss = 0
    concatenateJs = 0
}

Anyone has an idea what causes this bug or how to fix it?

Answer 1

In the site-config you've to use the fallbackType: free and set your fallback language, in this case german (ID = 0 ), as fallback.

-
title: Deutsch_vereinfacht
enabled: true
base: /de/
typo3Language: de
locale: de_DE
iso-639-1: de
navigationTitle: Deutsch_vereinfacht
hreflang: de-DE
direction: ''
fallbackType: free
fallbacks: '0'
flag: de
languageId: '2'

Then only the translated content is shown and in the navigation all not translated pages will be shown as well in the fallback-language