Fetch ({::) returns garbage

[jip]

In a clean session:

   JVERSION
Engine: j9.6.0-beta7/j64avx2/linux
Build: commercial/2024-05-05T21:37:34/clang-11-0-0/SLEEF=1
Library: 9.6.6
Platform: Linux 64
Installer: j9.6 install
InstallPath: /home/user/j9.6.0-beta7_j64avx2
Contact: www.jsoftware.com
   
   (1 ; 0) {:: 11 22 33 ; ''  NB. ok

   (2 ; 0) {:: 11 22 33 ; (, 444) ; ''  NB. garbage
@
   (2 ; 0) {:: 11 22 33 ; (, 444) ; (i. 0)  NB. garbage
@
   (2 ; 0) {:: 'abc' ; 'd' ; ''  NB. ok

   (2 ; 0) {:: 11 22 33 ; 444 ; ''  NB. ok

   (3 ; 0) {:: 11 22 33 ; 444 ; (, 555) ; ''  NB. garbage
@
   (3 ; 0) {:: 11 22 33 ; 444 ; 555 ; ''  NB. garbage
@
   (3 ; 0) {:: 11 22 33 ; (, 444) ; (, 555) ; ''  NB. ok

Results may vary in different sessions.

[bilam]

They now give index error. Is the issue fixed?

[jip]

Yes, thank you.