TYPO3 Core

can you give an example please? Any existing extension where this problem occurs?

Here you go:

CREATE TABLE tableWithForeignKeys (
field1 int(11) NOT NULL,
field2 int(11) NOT NULL,
FOREIGN KEY (field1) REFERENCES otherTable(field1) ON DELETE CASCADE,
FOREIGN KEY (field2) REFERENCES anotherTable(field2) ON DELETE CASCADE
) ENGINE=INNODB;

This is read by the EM in the following way:

CREATE TABLE tableWithForeignKeys (
field1 int(11) NOT NULL,
field2 int(11) NOT NULL,
FOREIGN KEY (field2) REFERENCES anotherTable(field2) ON DELETE CASCADE
) TYPE=INNODB;

And there is no extension I know of that has this problem. I've had this problem when writing an extension of my own.