open https://gitlab.synchro.net/main/sbbs/-/issues/934

This is new behavior in Synchronet v3.21 (new terminal abstraction):

When using Qmodem 4.6, when connected to Synchronet, once the blink attribute is enabled by the BBS, it never gets disabled in the terminal. e.g. setting "console.attributes = 7" in JS or parsing a Ctrl-AN in a display file/string doesn't disable the blink attribute in the client. I don't see this difference in behavior between Synchronet v3.20 and v3.21 when using other terminals (e.g. SyncTERM).
--- SBBSecho 3.27-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)

https://gitlab.synchro.net/main/sbbs/-/issues/934#note_7278

I see the same issue when using Telemate version 4.20.
--- SBBSecho 3.27-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)

https://gitlab.synchro.net/main/sbbs/-/issues/934#note_7279

You can test Synchronet v3.20 at bbs.synchro.net and v3.21 at vert.synchro.net and cvs.synchro.net to observe the differences in behavior.
--- SBBSecho 3.27-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)