When i put java program its convert some diifernet emojes

My java code is :* its convert kiss emoji
so iam very distrubed in this problem . please fix the bug

Os: linux mint 20.3
cinnamon 64-bit

jisi- package: org- jitsi.jitsi=meet
version -2022.3.1
size-207.2Mb
remote-flathub
architecture-X86_64
Branch-stable

Steps to reproduce
1).open jitsi
2)click chart box
3)type code :*
4)then open the code

Actual result:
it was converted emoji

Expected result:
Do not change the code to emoji

Any PRs with fixes are welcome.