Fred rebuild drops all modx tags in fred elements

[iicuken]

I have some fred elements with modx tags inside and appropriate remote config: "remote": true.
Before fred rebuild, content on resource admin page under "Open In Fred" button may look like:

[[!getContentBlock? &alias='header']]<section class="fw-main-row" style="min-height: 111px;"><section class="fw-main-ro

e.g modx tags are in place, and resource page preview looking fine.

But after fred rebuild all modx tags that was inside Fred elements are gone. And resource page preview is totally broken.
To restore page i need to push button "Open in Fred" in resource admin page, and resave page inside Fred.
After that content on resource admin page under "Open in Fred" button again contain all modx tags, and page preview looks fine again.
Pls help!!

[iicuken]

Its probably bug of my modx install