Bug in v10.0.3447 - Drafts w/o subject created externally associated with random conversations/emails

Prerequisites:
eM Client Version 10.0.3447 (d250ce6)
Settings > Mail > Conversations: Show conversations in all views
email account on IceWarp Server accessed via IMAP
External client #1: IceWarp WebKlient/Webmail via browser on a PC
External client #2: K-9 mail via IMAP on an Android smartphone

Problem description:
If I create a draft in an external client (#1 or #2) without specifying a Subject (IMPORTANT) and then save it as a draft, for some unknown reason the draft is attached to an old conversation (a different one each time) or another old email. For example, on the first attempt to a 2018 conversation, the next to a 2014 conversation, and on the third attempt to an email from 2013.

Consequences:
The created draft is saved in the Drafts view with the date taken from the conversation or email it is associated with. In contrast, this old conversation or email that the created draft becomes part of is now displayed in the Inbox and All Inboxes views with a new date corresponding to the creation of the draft. After deleting the associated draft, the conversation/email remains displayed in these views with this new date.

Workaround:
If the draft is associated with an individual email, after its deletion you can right-click on the message and select Properties… > Reapair > Repair to return the original date of the email. This is not possible in the case of a conversation, as the Properties… option is not accessible on the conversation and cannot be achieved by repairing individual messages in the conversation one at a time.

Question:
This behaviour brings me to the following question: How to perform Repair action for conversations that consist of multiple messages.

Request:
Could you please fix this bug in the next version?