What steps will reproduce the problem?

1. using Deadly boss mods
2. click dbm's button near by small map
3. the bug report will display

What version of ShestakUI are you using? (Stating 'latest' is not useful)

0.96

Do you have an error log of what happened?

Message: Interface\AddOns\ShestakUI\Core\API.lua:92: attempt to call method 'SetBackdrop' (a nil value)
Time: Sat Jun 13 17:07:43 2020
Count: 1
Stack: Interface\AddOns\ShestakUI\Core\API.lua:92: attempt to call method 'SetBackdrop' (a nil value)
[C]: in function LoadAddOn' Interface\AddOns\DBM-Core\DBM-Core.lua:2685: in function LoadGUI'
Interface\AddOns\DBM-Core\DBM-Core.lua:2731: in function `OnClick'
...tlasLootClassic\Libs\LibDBIcon-1.0\LibDBIcon-1.0.lua:144: in function <...tlasLootClassic\Libs\LibDBIcon-1.0\LibDBIcon-1.0.lua:142>

Locals: (*temporary) = "DBM-GUI"
(*temporary) = defined =[C]:-1

Any additional information? (example: WoW language if not English) (Attach screenshots here if available, do not link externally)

Chinese

You use old version of dbm?

No,the version of dbm is 1.13.49-classic

I fix something on my git yesterday.

I fix something on my git yesterday.

whtch day update to the new release version?