Unable to close a file descriptor using exec command

[Venkat Raman]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -O2 -flto=auto -ffat-lto-objects -fexceptions -g 
-grecord-gcc-switches -pipe -Wall -Werror=format-security 
-Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS 
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong 
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64   -mtune=generic 
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection 
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
uname output: Linux kube1 6.7.6-200.fc39.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Feb 
23 18:27:29 UTC 2024 x86_64 GNU/Linux
Machine Type: x86_64-redhat-linux-gnu

Bash Version: 5.2
Patch Level: 26
Release Status: release

Description:
        [Unable to close a file descriptor created  using  bash exec ]

Repeat-By:
        exec 2>&test1 commands freezes the terminal and unable to close the fd.

Fix:
        [Is there a sane  way to close the fd?]