I checked and earlier chapters still have it, and seeing as mangas uploaded at the same time have it, perhaps it's just a setting option that the uploader has to click, though I find it weird that, as you say, it's only happening with manhwas, which is beyond frustrating since multipage is the closest to the real format and is how you're supposed to read webtoons. Not having the multi-page disrupts the flow since webtoons aren't made to be read like a traditional comic book with a set number of panels per page...
I don't know, could we perhaps report it as a problem?
To be honest, I really don't know how to report a problem here.
I've seen a thread dedicated to this problem n the main page as well. So everyone is having the same problem.
And you're right about it being frustrating, also because I can't use the keyboard arrows move between pages and because some pages have their text cut and it's uncomfortable to read like this.
So if someone knows how to report it, please do it.
Anyone know why the multi-page option isn't there anymore?