<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div class="">On Aug 17, 2016, at 8:27 AM, Themis Matsoukas <<a href="mailto:tmatsoukas@icloud.com" class="">tmatsoukas@icloud.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: SourceCodePro-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">I noticed the following reproducible problem with TS 3.66 on El Capitan (10.11.6): with source and pdf open, close the pdf. Sync from source to make the pdf reappear, or simply typeset. The new pdf window is unresponsive to all controls (page down/up, magnification etc). You have to relaunch TS to obtain normal behavior.</span><br style="font-family: SourceCodePro-Regular; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote></div><br class=""><div class="">Themis,</div><div class=""><br class=""></div><div class="">I just tried reproducing what you are seeing and I can only reproduce part of it. I can scroll using a mouse, the touchpad, and by grabbing the scrollbar. The magnifier also works, but the “Show previous page” and “Show next page” buttons in the toolbar do not do anything. If I quit and restart, those buttons work again. I am running the same version of OS X (macOS) and TeXShop that you are running.</div><div class=""><br class=""></div><div class="">Gary</div><div class=""><br class=""></div></body></html>