I was hasty when I was packing stuffs in kldc2017 base ROM v4, and somehow ended up including an older version of retry. As a consequence, it does not reset the game properly in levels that use some of LM3.00+'s new level heights/widths modes.
Here's an instruction to fix the issue if your level suffers from it.
Step 1. Download this file https://bin.smwcentral.net/u/1250/retry.asm
and replace "common patches/do_not_modify/retry.asm" with this.
Step 2. Execute "save_common_patch_settings.bat" to apply the modification.
This change also applied to the base ROM link (https://bin.smwcentral.net/u/1250/kldc_base_v4.7z
). Sorry for the stupid mistake.