I have added 4 RSS feeds to RssFeed boxes plugin and they show on website alright.
But I didn't want them on every page, so I went to "Content Boxes" and ticked off "Sticky" in "Show box on" section of RSS boxes.
Now they don't show up on every page, only on Home which is what I wanted.

But, now when I go back to RssFeed boxes plugin configuration I see that names of feeds are missing:
rss.PNG

When I edit rssfeed I can see that names are there:
rss2.PNG

While loading page I can see that
/plugins/rssfeed/admin/rssfeed.inc.php?q=ext&_dc=1617016914451&start=0&li mit=20

returns following data:

{"total":"4","data":[{"ID":"5","Side":"Middle right","Tpl":"Yes","Url":"https:\/\/lenews.ch\/feed\/","Date":"2021-03-29 09:17:23","Update_delay":"12","Last_update":"2021-03-29 09:17:23","Article_num":"5","Status":"Active","Key ":"rssfeed_5","name":null},{"ID":"2","Side":"Middl e left","Tpl":"Yes","Url":"https:\/\/fintechnews.ch\/feed\/","Date":"2021-03-29 09:17:54","Update_delay":"12","Last_update":"2021-03-29 09:17:54","Article_num":"5","Status":"Active","Key ":"rssfeed_2","name":null},{"ID":"3","Side":"Middl e right","Tpl":"Yes","Url":"http:\/\/feeds.switzerlandnews.net\/rss\/ed0dcae976801452","Date":"2021-03-28 15:47:27","Update_delay":"12","Last_update":"2021-03-29 10:00:02","Article_num":"5","Status":"Active","Key ":"rssfeed_3","name":null},{"ID":"4","Side":"Middl e left","Tpl":"Yes","Url":"https:\/\/www.swissinfo.ch\/service\/ger\/rssxml\/top-news\/rss","Date":"2021-03-28 15:47:22","Update_delay":"12","Last_update":"2021-03-29 10:00:02","Article_num":"5","Status":"Active","Key ":"rssfeed_4","name":null}]}

When i try to add new feed I can see that name is there:
rss3.PNG

And now xhr request returns:
{"total":"5","data":[{"ID":"5","Side":"Middle right","Tpl":"Yes","Url":"https:\/\/lenews.ch\/feed\/","Date":"2021-03-29 09:17:23","Update_delay":"12","Last_update":"2021-03-29 09:17:23","Article_num":"5","Status":"Active","Key ":"rssfeed_5","name":null},{"ID":"2","Side":"Middl e left","Tpl":"Yes","Url":"https:\/\/fintechnews.ch\/feed\/","Date":"2021-03-29 09:17:54","Update_delay":"12","Last_update":"2021-03-29 09:17:54","Article_num":"5","Status":"Active","Key ":"rssfeed_2","name":null},{"ID":"3","Side":"Middl e right","Tpl":"Yes","Url":"http:\/\/feeds.switzerlandnews.net\/rss\/ed0dcae976801452","Date":"2021-03-28 15:47:27","Update_delay":"12","Last_update":"2021-03-29 10:00:02","Article_num":"5","Status":"Active","Key ":"rssfeed_3","name":null},{"ID":"4","Side":"Middl e left","Tpl":"Yes","Url":"https:\/\/www.swissinfo.ch\/service\/ger\/rssxml\/top-news\/rss","Date":"2021-03-28 15:47:22","Update_delay":"12","Last_update":"2021-03-29 10:00:02","Article_num":"5","Status":"Active","Key ":"rssfeed_4","name":null},{"ID":"6","Side":"Botto m","Tpl":"Yes","Url":"https:\/\/lenews.ch\/feed\/","Date":"2021-03-29 11:28:01","Update_delay":"12","Last_update":"2021-03-29 11:28:01","Article_num":"5","Status":"Active","Key ":"rssfeed_6","name":"le news test"}]}

Is there a problem with the plugin or am I doing something wrong?