>>> My Info: Win7_64, Nightly 49, 32bit, ID 20160526082509 STR_1: 1. Set zoom level on this page to 100% 2. Press Ctrl+"+" 3 times 3. Hold Ctrl key, rotate mouse wheel down 3 times AR: Zoom level is set to 103% ER: Either X or Y X) Changing zoom level via keyboard should work the same way as via Ctrl+mouse wheel scroll Y) Strange values like 103% and 97% should be prohibited. Reference: Ctrl+"+" only switches between predefined values, it rounds off the numbers (when I set zoom level to 130% or 140% using mouse wheel, pressing Ctrl+"+" changes zoom level to 150% in both cases). Note: Fractional zoom levels 103%, 97% are NOT equal to 100% visually, as they cause numerous layout bugs.
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0 Firefox: 50.1.0, Build ID: 20161208153507 I have managed to reproduce this issue on the latest Firefox (50.1.0) release and latest Nightly (53.0a1) build. Is also reproducible if you zoom out the page.
status-firefox50: --- → affected
status-firefox51: --- → affected
status-firefox52: --- → affected
status-firefox53: --- → affected
Component: Untriaged → Panning and Zooming
Product: Firefox → Core
Text zoom is owned by layout.
Component: Panning and Zooming → Layout
Too late for firefox 52, mass-wontfix.
status-firefox52: affected → wontfix
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