Issue with internal text editor

If a text file has a certain size, the internal text editor will open a random number of lines.
Example: Text file size is 126KB, number of lines 1414 (displayed ok in notepad), first time I double click this file in WinSCP, 982 lines are displayed in the WinSCP internal Editor, next time 1118, next time 1051 etc. Tested on several text files, issue is the same. Small files are ok. Version 5.19.6 (But older versions also have this issue)
Please advice

Thanks for your report.

Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include a link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.