Dynamic address-list entry on v6.19

Hello,

I’m experiencing weird problem with the “address list” field while creating static lease. I can choose address list from already existing (pic 1), or type in new one, but every few minutes (not always the same amount of time), this field gets “erased”. It’s not that the value disappears, but the whole field is just “not enabled” (pic 2). The problem persists on my CCR with v6.19, but on my home router with v6.30.4 everything works fine. I’ve also noticed that typing

ip dhcp-server lease print detail where address=X.X.X.X

in terminal does not print “address-list” field in v6.19 (pic 3), as opposed to v6.30.4, where the field is visible. I tried to read changelogs for every update between v6.19 and v6.30, and none mentioned a fix for this problem.
The bigger problem is that the CCR is a gateway for about 250 hosts, so getting a RouterOs update is a really time consuming task (have to get backup machine up). I would be really thankful for a confirmation from a Mikrotik engineer, that the fix was released in particular RouterOs update.
Pic 1

Pic 2

Pic 3

I’ve tried assigning “Address List” field for one of the hosts, and it worked, even though the “Address List” field in lease configuration was presented as blank. It seems that it’s only a visibility problem, yet I’m still curious about an official statement from one of Mikrotik representatives. I hope it won’t spontaneously stop creating address list entries.