Table in phpmyadmin table list disappears

Since a longer time I have the problem, that sometimes a table disappears in the table list on the left side. But in the overview over all tables in the middle of the window all tables are listed.

Our server has the newest Plesk 17.8.11 installed, but i have this effect since several years now. From time to time a table is not listed in the navigation tree. Our provider says, that its probably a problem of the browser, but testing it on four different computer in three different networks and five different browser always shows the same result - the table is not there. At the screenshot you can see, that the table "kaufvertrag" is missing on the left.

Does anybody know this problem too and perhaps has a solution for that?