I have acually (14.10.2024) the same problem even with the newest update for visual studio when I edit javascript. Syntax highlighting really works up to code line 10000 and from line 10001 on all the code is in same color (no syntactical diffentiations by color)... This would not be so a big problem, but: It seems to me, that at runtime, i now get error messages (from the console-logs of the browsers) which reference code lines absolute unlogic in relation to the source code... So I thnik, that may be not only the syntax highlighting is confused but the whole source-code-line-numbering. I dont want to use "sytax fixers" and "large file viewers" etc. I think that this seems to be a fundamental problem which should be solved in a gener way!!! Waht can I do?