First, the interface UX is bad. There is no copy and paste functionality, which would be very useful for the basic mechanic of finding keywords in web pages and then searching for them. There are multiple problems with the window management emulation. If multiple windows are opened, it seems to be impossible to change which one is in front, making moving or cross-referencing information between windows difficult. Moving and resizing windows also works badly: I somehow managed to pin the notepad to the top-left corner, and I couldn't find a way to dislodge it, and when I tried to resize it, the size changed wildly, with the corner I was moving often nowhere near the mouse pointer. The notepad also has a text input issue: when it is closed and reopened, the cursor is moved to the beginning of the text and cannot be moved, making it impossible to append to existing text. I also fairly quickly encountered a bug that caused text input to stop working entirely, and I had to close and relaunch the game to restore it.
Second, the game was missing what I consider to be basic investigation QOL that I would expect in a game like this. Most importantly, I didn't see a list of previously executed searches and previously visited pages, which would be used to recall previously-discovered information. There is also no way to directly execute a search from a webpage or other text, such as by highlighting the text and right clicking to search for that text. Instead, with the previously mentioned lack of copy/paste functionality and useless notepad, in order to revisit a page you need to remember the relevant search term (and how it's spelled), manually type it in, and follow the relevant hyperlink sequence again to reach the desired page. Puzzles also don't seem to stay solved: after I unlocked the diary, the next time I opened it it was locked again, and I had to remember and manually type in the answers again.