Pro*C crashing with ORA-00600 when parsing table with varchar2( x Char)

Hello,

Since we converted our VARCHAR2 column'size to char instead of byte, Pro*C crash with:

ORA-00600: internal error code, arguments: [qctchr : bfl], [1], [40], [10], [1], [873], [1], [0], [], [], [], []

We're using Oracle 19 (SE2) + patch 33515361 on Linux x86_64 (Redhat 7.9) .

The database has been created with

CHARACTER SET         AL32UTF8

NATIONAL CHARACTER SET    AL16UTF16;

It's look like doc 1129908.1 / bug 7432659.

The available patches are for oracle 10 to 11.

Any solution, except reverting to BYTE size ?

PS:

I already met that bug few years ago with Oracle 12 running on a windows plateform.