Weird Issue with DB Table Selector Node in 5.5.3 ( Node Missing.. But, Available in Node Reposito...

My workflows is showing as “DB Table Selector” is missing… But, I can see in node repository.. Check following extension..

It is asking me to install “Knime Database”.. when I try to install. It is throwing error as “Extension already available”…. Bit confused.. Circular dependency issue..