Question Kunena opening with recent topics stays empty at first

Hi,

I have the following problem:
When any user with any kind of browser logs in on my kunena forum it shows 'Recent topics' by default.
However the list remains empty and will show only any topics when I switch to another list of topics (index, new, mine, etc) and back to recent.

Can anyone tell me how to fix this issue?

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Kunena menu details:

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ID	Name	Menutype	Link	Path	In trash
175	Forum	mainmenu	Itemid=166	kunena-2014-01-11	No
166	Forum	kunenamenu	view=home&defaultmenu=166	kunena	No
167	Index	kunenamenu	view=category&layout=list&catid=0	kunena/index	No
168	Recent	kunenamenu	view=topics&mode=replies	kunena/recent	No
169	Nieuw onderwerp	kunenamenu	view=topic&layout=create	kunena/nieuw-onderwerp	No
171	Mijn onderwerpen	kunenamenu	view=topics&layout=user&mode=posted&modetype=	kunena/mylatest	No
172	Profiel	kunenamenu	view=user	kunena/profile	No
173	Help	kunenamenu	view=misc	kunena/help	No
174	Zoeken	kunenamenu	view=search	kunena/search	No
102	Naar het forum	mainmenu	view=home&defaultmenu=168	astrologie-forum	No

Joomla default template details : GayleWeb | author: Winfried Buijen | version: 1.0 | creationdate: 24 mei 2015

Kunena default template details : Crypsis | author: Kunena Team | version: 5.1.15 | creationdate: 2019-10-27

Kunena template params:

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DefaultCategoryicon
profileIconset	default
DefaultIconset	hans-planje
editorIconset	default
bootstrap	0
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tooltips	1
borderless	1
SubjectLengthMessage	80
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avatarSizeX	40
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avatarSizeXPost	144
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avatarSizeXProfile	200
avatarSizeYProfile	200
templatebyText
templatebyName
templatebyLink

Kunena version detailed: Kunena 5.1.15 | 2019-10-27 [ Oberon ]
| Kunena detailed configuration:

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Kunena config settings:
board_offline	0
enablerss	0
threads_per_page	12
messages_per_page	6
messages_per_page_search	12
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recaptcha_theme	white
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| Kunena integration settings:

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Kunena - Finder Disabled
Kunena - AltaUserPoints Disabled
Kunena - Community Builder Disabled
Kunena - Easyblog Disabled
Kunena - Easyprofile Disabled
Kunena - Easysocial Disabled
Kunena - Gravatar Disabled
Kunena - JomSocial Disabled
Kunena - Joomla Enabled: access=1 login=1
Kunena - Kunena Enabled: avatar=1 profile=1
Kunena - UddeIM Disabled

| Joomla! detailed language files installed:

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Joomla! languages installed:
en-GB	English (United Kingdom)
nl-NL	Nederlands (nl-NL)

Third-party components: None

Third-party SEF components: None

Plugins: None

Modules: None

Check settings configuration frontend and menu-item recent

You've changed some Kunena menu items. The easiest way, if you create all menu items new.
docs.kunena.org/en/troubleshooting/menu-issues
docs.kunena.org/en/faq/kunena-menu