Hi Team,
Notepad3 (x64) v5.21.316.1 beta (dkt1-amr)
Compiler: MS Visual C++ 2019 v16.9.1 (VC v1928)
OS Version: Windows 10 Version 1909 (Build 18363)
as attached the captured video/gif, randomly i encountered this issue.

====================================issue No.1====================================
scenario: using numerous "=" as spacing interval lines/blocks;
action: stroking the Enter key;
currently: duplicate a new line with the ORIGINAL "123", while the ORIGINAL "123" is still there.
what's expected: enter a new line with the ORIGINAL "123", without the ORIGINAL "123" still there in the same place.
thinking:
i know it's the math calculation logic related here #2775, but, apparently, here is Not the math calculation formula, at least there's no digit in the left side of the "=".
====================================issue No.2====================================
at the first time of Enter key stroking, the "123" changed into "12", i don't have a clue why it happened.
what's more, it occurred randomly, i don't know which time it would happen, normally it won't happened(as seen in the captured gif)
any insights here?
thanks for consideration and possible optimisation.
This seems to be a regression related to Tiny-Expression calculations.
If it is annoying for your current work, feel free to disable Tiny-Expression until fixed.
Hello @bravo-hero ,
Feel free to test the "BETA/RC PortableApps", version "Notepad3Portable_5.21.326.1_beta.paf" or newer, see 1st list in issue #1129.
"Notepad3Portable BETA/RC PortableApps" version can be used with or without ".7z" extension.
Also, feel free to test the "BETA/RC Setup", version "Notepad3_5.21.326.1_beta_Setup" or newer, see the 2nd list in issue #1129.
Comments and suggestions are welcome... 馃槂
it's fixed in the updated version, thanks, team @RaiKoHoff @hpwamr
Most helpful comment
it's fixed in the updated version, thanks, team @RaiKoHoff @hpwamr