I recently updated to Pleco 3.2.53, and am currently at iOS 12.4.8 on my iPad Air (original) and 13.5.1 on my iPhone SE. I'm having a problem with PDF viewing on my iPad; it works just fine on my iPhone.
Specifically, on my iPad, I'm reading a PDF, and regardless of the setting of Settings->Reader->Vertically scroll PDFs, I cannot scroll the PDF horizontally, and the navigation thumbnails at the bottom do nothing. (Both horizontal scroll and the navigation thumbnails work just fine on my iPhone.) One potential complicating factor is that I have a dead spot on my iPad touchscreen, about 1 cm square, at the lower-left corner (in portrait mode). However, the rest of the bottom edge is just fine; for example, I can type the "undo," "keyboard," "radical," etc. buttons just fine. Any thoughts about what might be causing this? Should I uninstall and reinstall?
One more small "bug": It's not really important, but it's bugged me for a while, and maybe you can explain why the UI works the way it does on the iPhone. In the dictionary, there are buttons for handwriting and keyboard, to switch between handwriting input and keyboard input. Likewise, there are buttons for 中 and 英, to switch between Chinese and English headwords.
What's always bugged me is that the input buttons show what the mode will switch to, whereas the language buttons show with the mode is now. That is to say, if I'm in keyboard mode, the input button has the brush icon, to switch to handwriting. On the other hand, if I'm currently in Chinese mode, the language button is labelled 中, showing what the mode is now. This difference doesn't show up on the iPad, where both buttons show what the mode will switch to.
Is there some reason why that should be, or is that unintended behavior?
ETA: Still one of my all-time favorite apps, over a decade on now—a very satisfied customer since my Palm handheld!