I just upgraded to version 4.0.2 of Adminer and now I cannot create tables on my sqlite3 databases. When I create the table adminer says table was created ok but the new table does not appear on the left sidebar and if I go to Alter table it says "no tables". Version 3.7.1 works fine.
Thanks for the report, this is now fixed in Git. See also https://sourceforge.net/p/adminer/bugs-and-features/373/.