I have an issue into a project, which is blocked by another one.
So I did edit the issue, I did add the blocking issue in proper field and I indicated that the link type is "blocked by".
It looks correct, also the BigGantt component got this configuration.
The problem is that when I edit the issue, I can not see the linked issue anymore (the "issue" sub-field of "Linked Issue" field is empty).
I have observed that this problem exists also for different link type (e.g "blocks").
Step1: assign linked issue as "blocked by":

Step2: verify that the link configuration has been acquired:

Step3: edit again the issue and the link is no more present

Is this a known Jira problem or a misuse?
Thanks